Sitbomm

Acronym: Snickering In The Back Of My Mind.

!.) Typically used in text and/or chat when one finds something amusing but does not actually laugh out loud

2.) Can be used to inform a friend that their joke was short of funny, or even not funny at all.

Ralph: Did you hear the one about the sidewalk?

Sam: Um... no I guess not.

Ralph: Its all over town.

Sam (with blank expression): Sitbomm

Wang dang du?

A question I ask my kids after flicking their ear when they are not listening and meaning "what are you going to do about it?"

Hey Billy.... Billy... BILLY... *flick* (Billy turns with startled, sometimes irritated, expression.)

(Dad with arms out, palms up) Wang dang du, Billy? Wang dang du?