I feel like my drinking tolerance isnt normal?

Dont tell me im too young to drink... i do it responsibly and only when im by myself. never with friends or boys or anything. i do it to get away. when i drink, i drink probably half a cup of vodka or rum at a time. i only get tipsy not even drunk. im fourteen. im 5 foot one. and 87 pounds. is this normal? i feel like i hacve a huge tolerance? and also what is guy rot? also, i do it on an empty stomach, with no chaser. i just down it.