Knock-It-Out-Of-The-Park-Er

A person who succeeds at everything they do.

Me: I love Paul Allen! That guy right there is a real knock-it-out-of-the-park-er!
You: Yeah, I hate him.

Er Dunne

A dangerous internet hacker and online scammer which lurks in gaming related forums and multiplayer videogames in general.
He's said to turn really aggressive toward the ones that disapprove of his deeds, to the point of doxxing and/or blackmailing his "opponents".

Did you heard about Er Dunne? He scammed countless players on Overwatch

Dude you're worse than Er Dunne

Soup-er-Sad

how i feel most of the time :(....

Bobby-how are you feeling, feeling today?
Jonogan-soup-er-sad :(....
Bobby-good, i hate you

[er]

Er is used to talk about sassy and arrogant person.

Maria is so er

ER fap

The fine are of masterbating and blowing you load all over the room at the Emergancy Room in a hospital.

I went in last night just for a ER Fap . Was the time of my life .

false-er

someone who frequently tells lies

taixa is a false-er, she is so dishonest.

I am not a false-er, my nickname is honest abe

w00t!er

A person or NPC who says w00t! instead of yay, huzzah, hoo-ray, or any other variation of those words.

w00t! I reached lvl 170!
You poor w00t!er...