Shulup/Shutlup
Usually, little kids can't, for some reason, say shut up so they say this instead. It's funny because it'll throw off your friends because they won't be expecting it.
"damn you talk to much, can you shulup lil boy, you smell like neck sweat and farts. God damn shutlup!"
"shulup/shutlup"
"shulup/shutlup"