Sinister Finister 

God of the bass. Known to hang out with Nasty Maggots. A Cabbage Night Orchestra staple. All tremble in his presence, not due to fear, but rather to the low-frequency rumbles from the 4-stringed instrument of Satin (not Satan, but Satin – dark overlord of the underworld of disturbing artwork). “Sinister Finister”…the uttering of his very name causes your car to stall, your guitar to detune or snare drum head to break. An evil, evil presence which must be stopped in our lifetime, before somebody pokes an eye out.

Man, I went to see the Nasty Maggots last night, and Sinister Finister was there, and after the show on the way home, we were talking about him, and my car stalled!

Sinister Finister by Slashy J. Izzbourne October 30, 2004

sinister sipper 

Someone who commonly sips from a straw, often protruding from a beverage of various liquids.

One who sips sinisterly is considered extremely dangerous, take caution when approaching one in the wild.

man 1: dude, what is that thing?
man 2: i don't know, it looks pretty sinister
man 1: what is it sipping?!?
man 2: oh my word, it's a sinister sipper! run!!

sinister sipper by thesipper12345 September 2, 2012

Sinister Behaviour

When someone has terrible behaviour and is acting like a complete menace.

If you keep up this sinister behaviour, you won’t get the privilege of playing Roblox

Sinister Behaviour by MasterOfTaints May 10, 2023

sinister D 

A situation where a smallish, dried out, extraordinarily tenacious remnant of fecal matter which, when unwittingly rolled into a mixture with toilet paper lint by the action of wiping, becomes almost irremovably entangled among ones anal hair, which in turn causes what one can only refer to as a net of hair that blocks the passage of poop from anus to toilet, leaving a heaping mound of poop suspended in "hair net", making for a very messy situation.

Damn Tyler, I know you called the bathroom right after I pooped, but it was a must that I shower immediately after running into a Sinister D. Hopefully I won't shower shart while I'm in there and prolong the process.

-See shower shart

sinister D by Sinister D March 16, 2009

sinister slice

1.) When a man repeatedly returns to his ex-girlfriend/ex wife, even though he hates her, just for the sex.

2.) being pussy-whipped to a girl your friends and family hate. often friends will try to separate the victim from his assailant.

"Dude, where's Jack? He said he was gonna meet us at the bar?"
"He went back to Jill's again,"
"Looks like he's got a case of the sinister slice again. we gotta get him away from her, for good."

sinister slice by LDKSparda December 21, 2009

sinister sam 

A mean looking but really harmless cowboy on Sesame Street, just like Bad Bart.

Catchphrase: "Alright, listen, you varmints. I was just over at the general store and I understand that some hombre bought the last box of crayons. But I wanna know Y".

Uh oh, everybody look here. Here comes the meanest hombre in the west, Sinister Sam.

sinister sam by tyrulz August 1, 2014

sinister snack 

Sardines, mustard, and pickles arranged in a pentacle shape.

Coined by iFunny user Wignasty with added instructions on the preparation.

Have you seen Wignasty's sinister snack?

I vomited because my vril levels aren't high enough to tolerate the dark energy emanating from the meal.

sinister snack by PulcherGyst May 13, 2022