"A device that you're repairing will operate **absolutely perfectly** while you have it taken apart to work on it, but then when you get it all put back together and have all the cabinet-screws re-inserted, THAT'S when the device will decide not to work again."
To lessen the chance of getting "bitten" by Murphy's Law of Post-repair Reassembly, one should double-check everything on a refurbished device before putting it back together again.
by QuacksO March 7, 2019
Get the Murphy's Law of Post-repair Reassemblymug. You can wait 'n' wait till clear into mid-May to trim off your itchy bushy Santa-Claus winter beard and you'll have nuthin' but sweltering-skinned moderate-temperature days all along, but if you "break out da Norelco" at any point during dat period, da weather will immediately turn frigid and blustery again, and then you'll have chilly-cheeks syndrome for an entire month!
One good way to minimize da "Murphy's Law of shaving" debacle is to simply wait till da end of March to "mow da lawn" --- dat way, you'll not be so likely to needlessly suffer from extra-warm weather-temps' making your chin and jowls feel like they're inside a blast-furnace, but on da other hand, it will minimize da chances of "freezin' yer face off", too, since there are seldom any significant cold snaps later than three months into da new year.
by QuacksO March 15, 2025
Get the Murphy's Law of shavingmug. 
"The desirability of and/or your need for an item at a garage sale will be in direct inverse proportion to the likelihood of your actually being able to purchase it."
The four most common/infuriating occasions when Murphy's Law of Garage Sales holds true:
(1) A desired item is something that's just stored in the family's garage; it’s not one of the items for sale.
(2) The item has already been sold, and the homeowner is just “holding” it till the buyer gets back with either the money or a vehicle to transport the item to his own home.
(3) The item is too expensive, and the seller will not budge on the price. (Note: this is not always an "all hope is lost" situation --- you may have at least two additional options. First, try coming back again later in the day to see if the item is still unsold --- if YOU think that the item is overpriced, then most OTHER yard-sailers may think so, too, and so nobody else may have bought the item yet, either, giving you a second crack at possibly purchasing it at a reduced price, especially since by now the seller may likely feel a bit "desperate" to get rid of it. And second, have a glance at the trash-heap out front of the person’s house that evening --- sometimes unsold yard-sale items will simply be tossed out, and so you can then get them for free.)
(4) The item is something that you would logically want to test out first to make sure it operates satisfactorily, but there is no hookup for electricity/water/telephone/internet/antenna/audio/video at the site of the sale, and the stubborn owner will not allow you to either bring the item into his house or temporarily take it somewhere else to test it.
(1) A desired item is something that's just stored in the family's garage; it’s not one of the items for sale.
(2) The item has already been sold, and the homeowner is just “holding” it till the buyer gets back with either the money or a vehicle to transport the item to his own home.
(3) The item is too expensive, and the seller will not budge on the price. (Note: this is not always an "all hope is lost" situation --- you may have at least two additional options. First, try coming back again later in the day to see if the item is still unsold --- if YOU think that the item is overpriced, then most OTHER yard-sailers may think so, too, and so nobody else may have bought the item yet, either, giving you a second crack at possibly purchasing it at a reduced price, especially since by now the seller may likely feel a bit "desperate" to get rid of it. And second, have a glance at the trash-heap out front of the person’s house that evening --- sometimes unsold yard-sale items will simply be tossed out, and so you can then get them for free.)
(4) The item is something that you would logically want to test out first to make sure it operates satisfactorily, but there is no hookup for electricity/water/telephone/internet/antenna/audio/video at the site of the sale, and the stubborn owner will not allow you to either bring the item into his house or temporarily take it somewhere else to test it.
by QuacksO August 1, 2018
Get the Murphy's Law of Garage Salesmug. by Johnnyon the spot July 26, 2022
Get the Esteban Murphymug. by Anharris May 23, 2017
Get the Scruffy Murphymug. "No matter how many times that you and a smoker change places/locations while spending time together outdoors, the breeze is always gonna switch around and waft the tobacco-fumes directly past your face."
I absolutely totally love my new middle-aged lady-friend, but we both go absolutely crazy trying to avoid bothering me with the smoke whenever she needs a cigarette while we're going for a rowboat-ride or woods-trail hike --- sounds like a classic case of "Murphy's Law of Cigarette Smoke"!
by QuacksO August 2, 2018
Get the Murphy's Law of Cigarette Smokemug.