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12.
Someone unwilling to donate.

Japanese in origin, the first definition actually being unaesthetic.
File his email under "waste of time" he's a yabo.

This party is nothing but a bunch of yabos, that's why there's no more alcohol.
by Ihathobservedthisverywomam January 30, 2011
 
1.
boobs
dani: i like your dress
allison: thank you
dani: of course i dont have the yabos to wear it. My brother loves yabos, he really likes yours.
Allison: he does, does he?
- HOCUS POCUS
by miss peeniz biznatch November 08, 2003
 
2.
(n) Breasts of a female human, especially those of a larger variety
"She has YABOS that would make a trappist monk scream yahoo."
by Joseph November 28, 2003
 
3.
Big Beautiful Boobs
That chick has awesome yabos.
by venessa April 15, 2005
 
4.
An Australian Redneck
That skank ass aussie called me a yank! Friggin' outback trashy ass yabo!
by Bubba from Bama January 07, 2008
 
5.
A name for womens' breasts, e.g. hooters, knockers, etc.
Sally has the finest set of yabos I've ever seen.
by mero February 04, 2003
 
6.
A woman's pectorial area.

OFten misspelled yabos. Used mostly in the UK.
That chick has some nice yaboes!
by Bartsoe June 12, 2006
 
7.
everything but nothing at the same time
the good the bad and the ugly
yabo is the 6th sense
used when you don't know what to say but you obviously do because you said yabo

can be used to replace the word cool

yabo is yabo
dude that food was so yabo (good)
dude that food was so yabo (bad)

that guy is so yabo (cool)

*stubs toe* : YAAAABOOOOO
*wins lottery*: YAAAABOOOOO

Acronym:
Y: y in yabo
A: a in yabo
B: b in yabo
O: o in yabo

yabo is yabo
by yabo July 11, 2014