Trivia: When Joe Dirt finds out where he lives in Louisiana, there is a guy (Framer Fran) that speaks very strangely. He is played by Blake Clarke who played the same farmer character in The Waterboy.
Trivia: In the scene where Joe gets stopped by the cop before talking to Clem, the cop is Chris Farley's brother.
Trivia: When little Joe comes out of the trash can he's not at the Grand Canyon, he's in Utah as told in the DVD commentary. (00:05:40)
Answer: It's not so much a joke with a punchline, but more like a funny phrase. He was affiliated with the mob, and as such, has most likely been in violent situations. He asks "does your mother sew" and then punches his refelection in the fire extinguisher case (someone's face if a fight was really happening). The "get her to sew that" comment implies that the person he hit would have needed stitches. (thus the reference to sewing.)
Jazetopher
He was referring to fixing the hole left in the clothes after being shot.