Fact is, I think that swear words are even funnier. But I have been putting lots of effort into not swearing now-a-days... so that just leaves "dude."
Think about it. I now have a boy to call "dude"!
Cutie Patootie Dude. Little Dude. Doodster. Dude-icus Rex. The Dude Man. Round Dude. There is some unapologetic overuse going on over here.
Back when we had no kids, Dadguy and I went to see "Dude, Where's My Car" at the dollar movies. Have you seen it? Whoah, was that a baaaaad movie, but, whoah, we laughed our cans off! One particular line has made it into our all-time family in-jokes.... the old Chinese lady saying "...and theeeeeeeeeen?" Last night Dadguy pulled out that old-moldy at the dinner table for the first time in a while... using a gravelly voice and really drawing out the "theeeeen."
It's one of those bits that has been there for long enough that I wasn't 100% where it came from and had to ask if that was from the movie, and all Pearl heard in between bites of dinner was the title. So she laughed and said "mama! It's in the garage!"