When a guy asks a girl out and she tells him yes, but really means no because she's too nice to say no, which in turn messes with him more because he continues to think he has a chance, but really doesn't.
A meaningless but more exciting variation on the "yes/no?" question. Popularized by Gan Xingba's Avatar: the Abridged Series.
Can be abridged as "y/n/m/l?", but chances are, if your friend is not a hardcore Avatard, s/he will have no idea what the fuck that you're talking about and get confused.
The three only english words a french person that doesn't speak english knows. Often used like a running gag about someone who isn't fluent with his or her english(1) or as confusion(2).
(Imagine this dialogue is in french)
-Lucy is going to Los Angeles with you?
-Yeah but her English is really shitty.
-LOL, prepare for a lot of "yes no toasters"!
Yes no maybe so is a game show held between two people where they ask a question to an eraser then tose the eraser into the air and see what is land on yes no maybe so