The Butterbutt, or, more properly, the Yellow-rumped Warbler (Dendroica coronata) is one of the most common warblers in North America. In summers, males have streaked backs of black on slate blue, white wing patches, a streaked breast, and conspicuous yellow patches on the crown, flank, and rump.

a woman who is very attractive, except she has a large or unattractive butt.

Similar to the bubble butt, which relates to an ass with the shape and roundness of a bubble, butterbutt is a butt slathered in butter.

A female with whom you can place an ear of corn between her buttcheeks in order to butter it.

To slather some butter onto a persons gluteus maximus. This usually occurs if a person runs out of lubricant. (Do not attempt in your household or anywhere for that matter)

A person whose personality changes quickly depending on the situation they are in.