Random add 

When someone randomly adds another person

Emma Byers sent a random add to David Scott then denied such a event which cannot simply be denied

Random add by Xoxoxoco September 4, 2016

Add random user 

When someone reaches so much pure boredom that they type the options of this website

“Ok so the plus is add, the arrows are random and the profile is user, this makes add random user, i wonder if anyone had made a definition for that.”

Add random user by larry stintz September 19, 2021

Randomandarin

Adj. A synonym used to replace the overly abused abjective "random".

Despite it being created by sheer, MSN-influenced dorkassery, it has since begun a campaign to replace "Random", a word that which has almost lost all significance in the English language. This is due to its international syndication (which, sadly, is irreversible) with teen groups such as Popular people, Beautiful people, Jocks, Emos, Goths, Punks, Bogans, Hotties, Notties, Stoners, Drama-Queens, Bludgers, Musos, Speds, Techies, Sporties, Alcies, Clowns, Sluts, Smuts, Drop-Outs, Metros, Fags, Metro-fags, Dags, Try-Hards, Otakus, Goodie-Goodies, Over-Achievers, Snobs, Ruffians, Gangsters, partiers, Arties, Gamers, Nerds, Geeks, Creeps, Freaks and Dorks alike.

"Aya can be so randomandarin!"

Randomandarin by Full Metal Alastair January 2, 2009