Funny Dirty Joke

boy: 'showering' baby sister walks in.
sister: what's that?
boy: my toy soldier.
sister: ok.
later that night the boys sister decides to go play with the toy soldier. the next morning the boy wakes up in hospital.
boy: what happened why am I in hospital?
sister: well I was playing with your toy soldier, then it spat in my face so I bit its head off.