Why do my best guy friends tease me alot?!?!?!?

ok so my two guyfriends love to tease me.1 calls me a hoe and says he hates me and no likes me (with a joking tone) and the other makes fun of my hair if my hairs in braids he calls me wendys girl or ragaty ann and if my hairs straight he calls me dora or velma from scooby doo. or he makes fun of my mouth because I have fuller lips for a puerto rican (i hav semi black ppl lips) and he says i have DSL ( sucking lips) and stuff and he pokes me with a ruler and says sorry at the end of the day when he sees that im mad. why do they do this? and the second friend that makes fun of me well i like him. but he says he doesnt like me.