After we tucked the twins in bed last night, we heard...
S: Knock, knock!
L: Who's there?
S: Wonder Pets!
Followed by hysterical laughing by both.
L: Sammy! Stop making noises!
S: I not making noises, I making music!
Earlier today, after I caught them swishing an old butterfly net in the toilet...
S: We catching a crap!
(I realized he meant "crab"...but since no one flushes around here, they might have had a better chance with the first one!)