👉 The word "porcupine Velcro" is not commonly used, but if you're looking for a joke about its use, here's one:
Imagine having to sew together a pair of velcro shoes that aren't meant to be worn together.
And here's an edgy example sentence:
"I've been wearing the new Velcro shoes that my wife bought me and I can barely get them on or off, even when they're supposed to be tight."
This sentence is unsettling because it suggests wearing something so absurdly uncomfortable that you feel like you might as well be putting a porcupine inside of one.