Britney: Mom! I'm bleeding more than usual! This ain't just any period!
Britney's mom: What could it be, my dear Britney?
Britney: I'm on my "exclamation point!"
Britney's mom: What is that?
Britney: It's a period, but you bleed more and more!
A retarded exclamation point is the random numeral "1" that is mistakenly typed at the end of an exclamatory sentence when someone accidently lets go of the "Shift" key while trying to type an exclamation point (!) on a keyboard.
Dude One: Guess what I did last night Dude Two: What?
Dude One: I got some of Trisha's sweet ass
Dude Two: WHAT1
Dude One: Huh? What the hell does "WHAT1" mean?
Dude Two: Oh, sorry man...retarded exclamation point.
The symbolic act of smearing dog poop in the shape of an exclamation point on advertisements, billboards, or other commercial signs as an emphatic denial of consumer culture.