Hmmmm...

 This is the conversation I overheard....I giggled and didn't know whether to be disturbed or just chalk it up to boys....

I am going to push you in! (of course this was said in a little kids rough and gruff impersonation)
No don't do it! (semi high kids normal voice)
Yes I can!
But I don't swim!....Don't push me in!
Well I'm going to do it!
No!  Please! Somebody save me!  Help, help, ahhh
Ha!  Silly fork, it's just the sink!