Check out that tip jar in the baseball cap.

He was cheating on her...what a tip jar!

He thinks he's the shit...what a tip jar!
by That Girl32 May 22, 2010
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Noun. Usually an open cup or jar on the counter, near the register. Patrons can tip the staff by adding cash to the jar, instead of leaving cash on the table or on the bar. Restaurant and bar servers might split the pot each shift, so everyone gets a fair share of the tips.

Tip jars are also common in virtual worlds that require virtual money for certain activities. They can take any shape or appearance, because they just need to run a transactional script (just like a credit card swipe). Users touch or click the virtual object to "leave a tip", and the owner of the tip jar gets paid immediately. In Second Life, tip jars are often left where visitors are likely to make donations. They are not always placed by the owner of the parcel or even with their permission, so the presence of a tip jar can be very deceptive. If the land is free to build on, someone is gonna leave a tip jar there, sooner or later - and some sucker is gonna click on it for no good reason (literally giving money away).

Unlike virtual money, real tip jar cash is vulnerable to theft if left unattended. Patrons can skim a little off the top when no one is looking - or simply grab the money and run.
"I forgot to leave some money on the table."
"Don't worry about it. There's a tip jar."

"Rez your tip jar on the floor or somewhere beside you, don't attach it or wear it. Don't forget to take it back to your inventory before you logoff, otherwise the land owner will return it and it'll end up in the lost and found folder."

"Check it: tip jar..."
"Yeah, B, easy money!"
by criticalmass August 1, 2012
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When someone pretends to put his change in the tip jar while actually palming it and then, later, placing it in his own pocket. See also Poop Bag Mime.
Starbucks Barista: "I gave him sixty-two cents in change and he Tip Jar Mimed all of it but the pennies."
by Professor Godfather August 6, 2010
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The act of putting five or six dollars in a Tip Jar to influence customers to "tip"
Barista one: I put five singles in the tip jar so people will know where to put an extra dollar or two if we do a good job!
Barista two: "Spiking the tip jar" what a great idea!! we will make a lot more tips now!
by Crolojoe August 4, 2011
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The donation box at the cash register of a store.
Jimothy: I just donated to the Jumpstart Charity box at Canadian Tire!
Billiam: you mean the Undercover Tip Jar??
by Harvey HugeCock May 23, 2021
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