Slice Up
A polite way of saying "Shut the fuck up"
Person 1: "haha you just got beat 10-0 at FIFA"
Person 2: "Slice up"
Person 2: "Slice up"
Sliced up
Getting really high. Derived from slice, meaning an eighth of an ounce of marijuana.
After work, Patrick and Nate got sliced up with that chick from Whole Foods.
Warm up slice
A slice of pizza eaten while waiting for a full pie to be cooked.
Sal: I'm here to pick up two large pies and a small antipast
Vinny: Five more minutes
Sal: OK, give me a warm up slice while I wait.
Vinny: Five more minutes
Sal: OK, give me a warm up slice while I wait.