Dude I read that you can't be an alcoholic if you're a college student so I am good until I finish college
I personally stop when whatever I'm drinking doesn't taste like it suppose to. For example when really bad suddenly tastes "okay" that means it's time to slow down.
Funny story about drinking... A friend of mine got so drunk he ran around town throwing condoms at people screaming"I AM THE CONDOM FAIRY" Personally I stop drinking when I can't sit down without the room spinning.
Have you ever asked them if they want to dance or party? I hear they liked to be invited....they even have been known to give you jewelry for partying
My hands start to tingle, it's really weird but I know it's time to stop when that happens. It's very convent.