An older, heavy-set woman. Very similar to a MILF, but without the wanting to have sex with them part. Can be any chunky woman, but usually reserved for fat blondes.
Sure Dan's wife is a butterbomb, but it's not like he has a whole lot of other options.
by animother March 21, 2008
An Obese child under the age of 10 years of age.
The obese child in the swing is a butter bomb.
by Hotdog999 February 08, 2010