Because if they didn't they'd fall over.
What do you call a donkey with three legs?? A wonkey!!
Nirvana
She fell into a box of Ding Dongs
She had mittens on.
Because he was always out standing in his field.
Because he's got little legs. But seriously, what does ET stand for Because he can't sit down.
Because if he lifted up both legs it would fall over !