scandinavian jackhammer 

When you wriggle your thighs from side to side to ease out a difficult bowel movement.

"Mate, that was a tricky shit. I had to drop the Scandinavian jackhammer."

scandinavian jackhammer by mikjoms July 29, 2017

Scandanavian jackhammer 

The act of attaching a dildo to a jackhammer and using it to pleasure someone. Careful, they might also die.

I gave my girlfriend a scandanavian jackhammer last night and now she's in the hospital. I don't know if she's going to make it and I'm really scared.

Scandanavian jackhammer by Analbutt420 August 21, 2020