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That little part of your brain that will hear or think of something hilarious but inappropriate, which will act as its ignition. It is then powered by your attempts to ignore it, and will accelerate, never reaching a terminal speed and only stopping when you blurt out whatever thought started it at the worst possible moment. It is related - but not linked to - that part of your brain that inexorably broadcasts horrific images to the rest of your brain at inconvenient times, for example: images of corpses while eating, images of your mum during sex etc.

Called 'man motor' because there is no evidence of this phenomenon ever occurring in females.
Your idiot thoughts during a funeral: Hey, that dude who was killed in a horrific car accident at the age of 25's wife's face kinda looks like a pan-fried vagina.

Man motor: *click! whirr...* Yep, pan-fried vagina. Probably should tell someone that.

That one part of your brain responsible for - and completely incapable of - inhibition: No, that's horrible.

Man Motor: *Whirrrrrrrrrrrr...* Nah, go on, it'll be funny. You love causing egregious grief.

Inhibition: No, Man Motor, no.

Man Motor *WHHIIRRRRRRRR...* Come on, you don't know how people will react, they might like it.

Inhibition: Please stop trying to-

Man Motor: *WWWHHHHHIIIIIRRRRRRRRRRR...* PAN-FRIED VAGINA PAN-FRIED VAGINA PAN-FRIED VAGINA

You: HEY, DEAD MAN'S WIFE, YOU LOOK LIKE A PAN-FRIED VAGINA!

Everyone: *mortified gasps*

You, at the behest of your Man Motor: So... Anyone wanna fuck?
by Josh Turnbull June 07, 2010
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Apr 27 Word of the Day
A horoscope so bad that it strikes fear into the heart of the reader, rendering them unable take action or make a decision on anything or to even leave the house. This is caused by a paralyzing fear that those actions or decisions may cause the predictions to come true.
After reading "There is a lot of uncertainty around financial transactions and investments right now, and the wrong decision could result in dire consequences" in his daily Horrorscope, Edward climbed back into bed, pulled the sheets over his head and remained there for the rest of the day.

Edward only had enough gas in his car to get to the gas station but was not sure if he had enough money in his account to pay for gas. His cell phone service had been cut off because his payments were in arrears, and since the only way he could be sure he had enough money (to pay for gas) would be to call the bank, he felt it best to hide in bed and hope his horoscope for tomorrow was more positive.
by Edward Albee Deavers April 28, 2011
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