Truly Excellent Couple Ideas

Siamese twins (Even better as Siamese cats. Siamese cat twins?)
Native American and Christopher Columbus (A very exploitative relationship)
Hawaiian Punch (One dresses up as a boxer and the other dresses up as a hula dancer)
Pantomime Horse (Who’s gonna be the butt?)
Adam and Eve (Never mind fig leaves: just go naked!)
Priest and Nun (A couple that Barbara Maxwell can truly be proud of)
Hot Dog & Bun (No, this is not an open-faced sandwich)
Harry and Hermione or Ron and Ginny (Someone’s gonna Avada Kedavra somebody . . . )

Costumes That Can’t Possibly Be Sluttified
Slutty pregnant elephant in the third trimester of the gestation period (Other alternatives include beached whale or dumpster)
Slutty Yahtzee (Even if there is a full house, there’s a 1/6^5 chance that nobody’s gonna want that)
Slutty Sasquatch (“Me Sasquatch. Me sexy thang.” Yeah, right)
Slutty lamp with shade and stand (Nothing says curves like a pole with a lamp shade on its head)
Slutty Fellow of the Ring (Seriously, does anyone  have a special place in their loins for Gimli?)

Group Ideas: For the Whole Section!
Gang Green (Everyone in the group wears all green)
Chudley Cannons Quidditch Team (Because nobody gives a hoot about those suckers)
Sandwich Condiments (Just smear it all over y’all’s bodies)
Office Supplies (And then, Rob Schneider found out how hard it was to be a stapler)
Brady Bunch Characters (Wholesome family fun for the whole wholesome family)
Assorted Fruits (Fruit of the Loom style)
Favorite mythical creatures (I’ll be the Pegasus to your Pan)+