Derived from the phrase "peek a boo" and the word "weeaboo", this word is used to describe an Asian whose eyes go from squinty to large and back again rapidly or often.
To give someone who likes you just enough hope to keep them coming without the relationship actually going anywhere or advancing, and it usually keeps the victim in emotionalconfusion and pain.
Friend: Megan is taking days to respond to my texts, but she also seems to like me; things aren't adding up bro.
Me: I think she is peekabooing you.
FPS gamer lingo for a tactic employed by campers in which they peek around a corner then jump back repeatedly. There is most likely a peekaboo corner on most maps.