Can I learn how to play the drums without having one at the moment?

I really really really... love the drums i wanna learn to play so baddd :P but my mom won't let me, she got me a guitar but i got bored in the first few lessons, i didnt want a guitar but well... so i was thinking that maybe i could learn how to play the drums or at least the snare drum, and then probably when i'm like 18 or somethng and i'm not living with my parents any more i could get one and start playin, i know i sound crazy lol :P but is it possible for me to learn how to play the drums wthout having one? if yes can u suggest some Free sites that i can take a look at?