Squiggly Fish 

verb. The act of inserting a finger into a clothed buttcrack and either wiggling it around or sliding it upward while wiggling it.

noun. A name for the act itself.

verb: "Today we tried to squiggly fish Willem."

noun: "Erica gave Sarah an outstanding squiggly fish."

Squiggly Fish by The Squiggly Fisherman September 14, 2009

Squigly fish 

Surprising someone by wiggling your finger up one's anus (without them knowing), while yelling "SQUIGLY FISH!". Clothes may or may not be worn during this.

*John is standing in line at the concession stand waiting to get his popcorn*
April: SQUIGLY FISH!!!!
John: HOLY FUCK! YOU GOT ALL THE WAY IN THERE DAMMIT!
April: Yeah what can I say, I'm just good like that.

Squigly fish by April and John November 14, 2006