In the episode titled "The Odd Couple" Vince delivers a package to Val & Hollys apartment. Holly talks to Vince in the doorway while he's holding the box, and he says "This box is heavy, do you mind?" but when Val opens the box from Peter, all thats inside is a Chicago Pizza and kielbasa. Vince is a strong guy with big muscles so I don't see how that package could've been heavy.