showin up 

Acting dumb to impress others, usually friends.

ayo, why you showin' up ?

showin up by Anonymous March 27, 2005

Showin' Up 

Acting dumb to impress others; usually friends. Clowning

" Yo, Why you showin' up? "

Showin' Up by Anonymous May 13, 2005

Showing up uninvited 

in internet parlance, meant to convey the appearance of an unwanted or undesirable group of people that you weren't seeking out in the first place.

There was an interesting discussion about how to save up for retirement, but then all these bitcoin bros started showing up uninvited.

Showing up uninvited by JuliusCesarus July 11, 2021

shown up 

To be made a fool of or embarassed

On the court, the player was shown up by his opponent after the opponent dunked on him.

shown up by Seth04 April 30, 2006

Shown up 

Shown up, is when you force out a liar and catch them out.

Carmelo was shown up tonight as he walked past my room and waived with a grin. Not for long as he come undone, but now I know he's a liar.

Shown up by Jo Albert August 13, 2020