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2.
When you are standing quite a distance away from your boo, possible behind an object which leaves you partially hidden, and you want to let them know you are thinking of them, you wave from that distance hoping they will see you. While you are engaging in the waving act, you may wish to send them a few air hugs and wind pecks, which is also part of the Peak-a-boo package.

It can be used as a noun, adjective or a verb

*note: please make sure the your Peak-a-boos are received by your boo and not a random person. There have been cases of Peak-a-boos being lost in transmission :)
"awww... they're such a Peak-a-booers"

"honey... i am Peak-a-booing you from a distance. with love"

"wow... that gorgeous guy just got Peak-a-booed by that girl over there"

"they are so Peak-a-booey"

:) :) :)
by Peak-a-boo<3 June 10, 2010
 
1.
1 - Is a game similar to hide and seek, but played with babies. In the game, one (child, teenager, or adult) hides their face, pops back into the baby's view, and says - to the baby's amusement.

2 - When a woman shows quickly her boops, sticking up her shirt. It is usual on heavy metal concerts. Normally when a woman do it, it is about the female pride and domination.

3 - It is when a woman's cleveage is so open that she displays her tits as well as "she doesn't want".

4 - A lethal woman strategy of sensuality.
1 - Ohh... Little baby... Goody-goody... (baby laugh!)... Uhh... (hiding herself behind something!) Where is mommy, dear? (baby becoming sad...) Peekaboo! I see you!!!(baby smiling to his mom).

2 - Black Sabbath concert. Dirty woman playing. Girlfriends up on the crowd. They are showing her boops to camera talking: PEAK A BOO!

3 -
— Anh... Dear... You have to take up your shirt...
— Oh... I am sorry... I was peak-a-boo on you, huh?

4 - Damn! She made peak-a-boo on me and I didn't eat her! Oh, fuck.
by Shadow of a Damned Mind October 09, 2006