Monster's Ink 

The act of masterbating in the middle of the night whilst your partner is sleeping. Then on the brink of ejactulation, you let out a horrify shriek while unloading on the their face.

"Dude, last night I totally pulled a monster's ink on my chick! She woke up screaming!"

Monster's Ink by Gloss man March 18, 2014

Sink Monster

Slang for a sink garburator/garbage disposal/food disposer.

Feed your orange peel to the sink monster.

Sink Monster by thebuick December 9, 2009

Sink Monster

When you lean over to wash your hands in a public restroom, and there is water on the counter left over from the pervious user, getting that on your shirt is called being attacked by the sink monster.

-"What's that on your shirt?"
-"That? Oh I leaned over to far and was attacked by the sink monster."

Sink Monster by Cama Zots February 4, 2009

Monsters Inked

When a rather grizzly and sweaty gay man bursts through your closet door at night and ejaculates into your room, then disappearing back into the closet, never to be seen again.

I though it was a nightmare but in the morning I realized I was just monsters inked.

Monsters Inked by Kennith of the long schlong November 16, 2017