A McDonkaDonk is a person who has a large
butt due to eating excessive McDonalds. ; A person who was not born
with a large
butt, but grew
one due to eating excessive McDonalds.
"I was trying on my jeans the other day and my McDonkaDonk would
not fit in them
so now they do not fit!"
"You better stop eating at McDonalds
or you will get a McDonkaDonk girl!"