Alcohol not bad for you?

lol my parents are out today, so I decided to drink some beer...

my dad have this can that have 5L of beer, i tried about 250ml from it (don't want to try more because i'm afraid to get caught), i gulped it up in a few seconds, and didn't feel anything...

nothing's changed except i got this wierd beer taste in my mouth. I don't feel high at all... and no headaches or anything...

how much are you suppose to drink to get high?