When you ejaculate in the shower, and the glob of man jelly hangs out and floats across the shower floor.
Yo man I keep telling you to quit jerkin off in the shower and leaving your shower squids in there.

Hopped into the shower this morning and stepped on one of Bob's shower squids again!
by Dennis Fraudman December 18, 2018
Get the Shower Squid mug.
The mass of hair, conditioner, and other fluids that accumulate in a shower drain as a result of having long hair.
Man: “Gross, look at what I pulled out of the drain. How do I have any hair left?”
Woman: “It’s called a shower squid, embrace it!”
by Nervous Caterpillar October 16, 2018
Get the Shower Squid mug.