Synonym for 'random' - a person unknown to a group or one who says/does things which are inconsequential, makes contributions which are unconnected with the topic under discussion or behaves in ways which do not match the norms of a group or sub-culture.
Some randomer just walked in and left a plastic gnome on the bar.
A stranger/unknown person. Usually a friend of a friend.
"Who are those randomers over there?"
-Q. "Do you need a lift to the party tonight"
-A. "Yeah, can I bring a randomer along too?"
Someone you meet on a night out who noone knows but you remember later usually the next day
Who was that Randomer Dave was with last night?
Some randomer is after getting into my pictures
Random people. People you don't know, and who seem to be there for no reason. Strangers, or barely-there acquaintances.
The ones nobody invited to the party, but who hang around anyway - no-one will ask them to leave, as no-one knows who invited them in the first place.
My Facebook friends are a mix of colleagues, school friends, and randomers I couldn't turn down in case I'd met them and forgotten about it.
Someone of no real significance or importance in your life, who's just kind of there as part of the human population waiting to return to their nest. They could someday be important to you, but until then they are still just a randomer.
*You're opening a locker next to a randomer who is also opening his locker*
You: What's up.
Randomer: Hey, not much, you?
You: Nice, not much.
Randomer: Cool, later.
*You both leave the lockers and forget about each others' existence*
Randomer When you get a random bonor. A combination of the two words.
In class when you get one yell RANDOMER. noone will know what you mean. laughs assured.
Someone who says things that bear no relevance to the conversation at hand
"How long are your arms?"