strange that they would see it as onomatopoetic - it's like bragging rights for tasteless devotees to claim this cause that implies someone's done it and heard it. When really the sound would be more like "ow, this bone feels uncomfortable against my penis." A more reasonable etymology would be mash-up based (i think there's a real word for this): mix skull with fuck and you get...well, you get skuuck or skuck, which isn't great and doesn't sound novel, so change a vowel (very common among neologizers [not a word - i mean one who creates a neologism, so apt that it is one]) to the best sounding and most novel one, and squick comes out nicely.

this is pure conjecture, but i think it makes a good story.

call me occam, but i thought it was squishy fuck.

how squishy could it be? Are they assuming freshly-dead skull? I thought it was bony skull. And honestly, how much squishier would it be than any manner of "regular" which doesn't feature any bone or teeth or even (I believe...help me out here anna and nacho) tendon or cartilage.

no, no. freshly extracted eyeball, silly. tendons, blood, and possibly brainmeat still about.

It doesn't seem like it would be comfortable or pleasant to fuck a fleshless skull. Although if you're willing to fuck a skull at all, maybe comfort isn't the goal. I am officially over-thinking this.

Okay, I guess squishier because there's more free fluid and stuff coming out. Certainly more sonorous.

I totally neglected the fact that skull has a k and squick a qu.