We're learning more about this terrible tragedy.
Regis and David Letterman have always had a hilarious relationship, and it's awesome to see it continue into Reeg's 8th birthday!
Check out the clip above to see what Letterman gave Regis as a gift for such a milestone!
(Spoiler: It's a bunch of zingers. Like you didn't know, LOLz!)
Happy Birthday, Regis!