Originally a misspelling of "This is it, gentlemen.", but now used as a way to point out nice things. If someone tips you, this is gentlemen. If the price of Bitcoin rises, this is gentlemen. If the sun shines, this is gentlemen.
What the character Dr. Weird from the Adult Swim TV show Aqua Teen Hunger Force says at the beginning of each episode, even though he is usually only talking to his assistant, Steve.
A verbal agreement established by a Quality Control Manager and made with another person or group of people. It is manadatory that for a gentlemens agreement to take place that a paper trail must not exist, and the party that iniates and finalizes the gentlemens agreement must notify a third party that everything is under control because I made a gentlemens agreement with them. Great caution must be excercised when forming this type of agreement because it is not legally binding in any way and can result in a negative outcome.
I realize that we were directed in writing to correct the elevation of the sprinkler heads, but dont worry because I made a gentlemens agreement to only correct some of the sprinkler heads.