Definitions by Thom Ascott

butthorn 

Similar to a shoehorn but instead of being used for slipping on tight shoes, it is used to stretch tight pants over fat bodies.

Damn, Addison, did you see that chick with the cake top? (See cake-tops: exceeding "muffin-tops") She must have used a butthorn to get into those jeans

butthorn by Thom Ascott April 1, 2016