1. Beer Commercial - (verb) - the act of pouring a carbonated beverage in such a way that the foam meniscus rises above the top of the glass and flows down the side.
Hey! Be careful pouring that or it's gonna beer commercial all over the floor.
You: Man, you were on fire last night, I saw you leave with the blonde AND the brunette.
Me: You missed the redhead that came by before we went out to make it a beer commercial.