I saw 9 dolphins
You say this when someone makes a gross joke and you're too dumb to get it. It comes from a stupid drawing of 9 dolphins that kids saw instead of a naked couple.
'I saw 9 dolphins' after my uncle told a joke about a fish and a net.
'I saw 9 dolphins' when my cousin laughed at my brother's butt.
'I saw 9 dolphins' because I didn't know what a naked couple was.