Breaking Threads™
Some Assembly Required
Panel 1: a confident young man tosses the instruction manual over his shoulder as he opens a flat-pack box; a cat watches from a second box.Panel 2: the same man, sweating and confused, holds a board upside down amid a half-built frame; the cat wears the hardware bag as a hat.Panel 3: the man proudly thumbs-up beside the finished crooked shelf, a neat row of leftover screws on the floor; the cat sits on top.
Bonus panel

The cat's box is load-bearing.

The funniest panel, on a shirt “Some Assembly Required” The shop opens soon