"a" is learning to "substitute" words instead of swearing.
He tends to say "darn" a lot - only with lack of enunciation, it sounds like a worse curseword.... so I've been teaching him "gooseberries" -- and it's taking a hold.
The preschool teacher tells me she has to turn her head to hide her smile everytime he hollers out "gooseberries"...
And my favorite? When he is excited???