Top definition
A girl of certain age, who wishes to lose weight but isnt really fat, but is called a jumbo yak to make her feel not good about herself and usually is also used to name her quality of talking tooo much and being very gullible. they are ussually named cynthia, or cynthia
Mira Homes!!!! theres dat jumbo yak the one that got into your ranfla!!! ehh take her to the yak in the box pa que trage las hatch browns por the first time
by joey-san May 22, 2007