A phrase that a guy says to a girl loudly in a public place to attempt to embarrass that girl. This is usually sarcastic and said to a complete stranger who wants to ask a guy something simple.
The phrase originates from the movie "Billy Madison" when Adam Sandler's character makes an ass of himself while trying to fit in in high school...
Girl: "Excuse me, do you have a pen I could borrow?"
Person 1- I can't tell you
Person 2-I promise I won't tell
Person 1- ok but you can't tell anyone
Person 2- I won't
..later on Person 3- what did they say?
Person 2- yup he likes you
By Nana
And I Won't Spill My Beer
the ending at the end of a sentence to any action, whether it be difficult or simple, said in a Quick Draw Mcgraw type serious tone, similar to adding "in bed" to the end of sentences
ex. I am walking to my car, and i won't spill my beer.
i will do a handstand while walking up the stairs, and i won't spill my beer see in bed