Leave it to you silly gals to come with "rules" for drinking...

Here's my three "rules for drinking".

1. Don't wear a nice shirt because shit is most likely going to get spilled on it.
2. Don't bring my cell phone because I don't want to make phone calls I'll regret.
3. Have someone strong nearby to carry me when I need carrrying.

In the defence of young males...well, I mean...males that guys your age would consider young (under 25? under 30?), I gotta say, it's not really the age, but the location.
Guys that look to pick up chicks in places where their judgement is likely to be impaired on acount of alcohol, well, do I have to say the rest, or is it obvious enough? Of course they're gonna zoom in like vultures expecting that you're there to get hit on.
My advice to girls is - If you wanna drink with guys, drink with the ones you know...because among the ones you don't - I'm sure the sleazy drunken encounter/regret it in the morning ratio is much higher than the meet someone nice...etc ratio.
Also, don't be an idiot. Know your limits and moderate, don't allow anyone but yourself tell you when you should have your next drink.

Toss beer all you want DON'T TOSS LIQUOR. If you want just don't drink it simply stick to the beer but liquor is too expensive to waste just because you want it to look like you're drinking as much as everybody else.

Why toss the beer? that's just silly

You're missing the point

Maybe I am missing it...or not. I can still have all the beer I want, and control myself around guys...I mean, nuthin to it really. I aint gonna dump my beer, and I aint gonna get all crazy around some guy at a bar, or let myself be taken advantage of.:)