This happens when a woman is having sheer ecstasy and verbally expresses her pleasure by moaning out all of the vowels - not necessarily in successive order.
After Friday night's performance where Jim had given Shannon the kiss of bliss thereby making her exclaim all the vowels, he felt like their relationship was on solid ground. A, E, I, O, U and Y never sounded more beautiful!
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.