Wiktionary
vb. 1 To remove something, like a piece of cloth or bread, by tearing it with one quick strong pull. 2 (context UK Ireland vulgar English) to masturbate.
Usage examples of "yank off".
If you, my love, will remove your frock I will gladly yank off my beard.
She can get a solid yank off even the lightest, trashiest plastic-and-aluminum Chinese econobox.
He slid directly into Ellen Cherry, but she managed to stand up and yank off her ruined shoes before dashing to safety in the rain.
She struggled into the biochem body glove, having to yank off her boots and clothes to slide her feet into the tough fabric that sealed her inside a protective shell.
Han had to force himself not to yank off his helmet and call out Chewbacca's name.
She had to yank off her gentleman's gloves to tie knots in the makeshift bandages.
The would-be thief staggered backward to flop limply into the dark waters, and his companions descended upon the dying man to yank off his boots, knife and other possessions.
Then, when he was really ready, he would yank off her fancy green pants and hammer in.