Of course she can, she's Mona.

This sentence is used when you doubt about someone that can never be doubt of. It is used to make a reference about this person's personality and acts.

Person 1: She can't keep us here forever.
Person 2: Of course she can, she's Mona.

I can watch the fuck out of a movie

This is code word in the homosexual underground metal community for "I can suck a mean cock".

Many people in the heavy metal underground scene use this phrase to discreetly pick up on homosexuals. The reason for the discretion is that being gay is typically frowned upon amongst the Heavy Metal community. So if you are trying to pick up a gay dude publically and don't want people to know that you are a cock craving butt lover, just tell them "I can watch the fuck out of a movie". Those that are "in the know" in the heavy metal community will quickly accept the offer and allow you to suck his cock since he will now know that you can suck a mean cock.

So I was at a straight bar and ran into a gay dude, I told him "I can watch the fuck out of a movie"....... 2hrs later, I was sucking his cock.

"Hey, how do I let a fag know that I can suck a mean cock?". "Tell them You can watch the fuck out of a movie", that is code for "I can suck a mean cock".

open a can o' whupass

A phrase stating, "beat the living shit out of". Commonly paired with: you, it, I'll, etc.

Whupass being a shortcut compound for "whoop ass".

I'll open a can o' whupass on you!

court case in a can

Cody's Bourbon and Cola - well known as "court case in a can" in New Zealand. Named as such due to the frequency of violence and police call outs related to consumers of Cody's. Consumed by obnoxious 12 year-olds getting drunk in city skate parks, through to hard blokes and sheilas in rural New Zealand.
Originally 12% alcohol, they have slowly been getting reduced down in alcohol strength (7% as of 2022) due to pressure from police and politicians.

You crack the first court case in a can and suddenly it's tomorrow, you've got no shirt on and you're wearing somebody else's jandals.

Open a can of stew

Extreme defecation in a place other than a toilet

I had to open a can of stew so bad that I went all over the teacher's desk.

wine can

To drink in public by concealing your beverage in another container. Examples being Vodka in a water bottle, Rum/Whiskey in a Cola bottle, or wine in a can of red pop. The original reference is from It's Always Sunny in Philadelphia.

I like to walk around outside with a wine can.

Cock Can

When a mans cock is as thick as a coke can

So how was he Johnnie? Girl I can hardly walk this morning. He’s a real cock can.