Young twins dance along with Ke$ha-playing monkey

Twin toddlers can be a source of endless entertainment.

They fall asleep in unison. They laugh in unison. They fight over the pacifier. They rock out to daddy's guitar playing. They even speak their own language.

And sometimes they just really, really like their Ke$ha-playing monkey.

YouTube user Twinmama8111's youngsters get their groove on when their toy monkey starts playing their favourite age-inappropriate song.

When it stops? "Uh-oh."

Kids are amused by the darnedest things.