So I just realized two of my favorite characters on different shows say some form of "wait for it" frequently

Barney on HIMYM.. “Legen - wait for it - DARY” is one example of Barney’s wait for it… He uses it when he’s talking and something he’s about to say is important and or “good.”  I use his “wait for it” quite frequently in my every day life.

Shawn on Psych… “waitforiiiiiit” is his version of the phrase.  He uses it when something’s about to happen that will “change the game.”  I use his “wait for it” quite frequently in my every day life too.  

This is meaningless… but it’s fun to point out