The scotch notch measues how many drinks of scotch you've drank. 1 drink = 1 on the scotch notch, 2 drinks = 2 on the scotch notch, and so forth
Scotch Drinker 1: Dude, Bill is totally hitting on your sister... and it's her wedding.
Scotch Drinker 2: Yeah, he's at least 7 on the scotch notch by now.
Bill: BABY I KNOW YOU'RE MARRIED BUT JUST GIVE ME A CHANCE I'LL PAY FOR THE DIVORCE PLEASE JUST LET ME PUT THE TIP IN