What? Those are rolls of toilet paper, not folded clothing. The joke is that they have assorted patterns, like a patchwork quilt does…
More specifically, the joke is that one brand of toilet paper actually advertises that it is “quilted”, suggesting that this is better than ordinary, non-quilted TP. THIS TP, however, has patterns and designs on it like patchwork quilts do.
Yes, it’s a matter of the scale or granularity of the quilting.
I agree that it is a joke about quilted TP.
The woman seems excessively proud of herself.
The rolls have been stitched together along the edges (for some reason visibly), like quilt blocks.
Comics I Don't Understand 
Because he has quilted clothing.
Seriously.
That’s all there is to it.
What? Those are rolls of toilet paper, not folded clothing. The joke is that they have assorted patterns, like a patchwork quilt does…
More specifically, the joke is that one brand of toilet paper actually advertises that it is “quilted”, suggesting that this is better than ordinary, non-quilted TP. THIS TP, however, has patterns and designs on it like patchwork quilts do.
Yes, it’s a matter of the scale or granularity of the quilting.
I agree that it is a joke about quilted TP.
The woman seems excessively proud of herself.
The rolls have been stitched together along the edges (for some reason visibly), like quilt blocks.