In Mexico and parts of central America, this word is used to describe the booty. Some say ass, behind, butt, gluteus maximums or big cheeks. In Spanish el fundillo es unas nalgas, culo, pompis, or cola.
My girlfriend was her new perfume named fundillo from Paris Hilton and she totally smell like a hershey squirt. It really brought out the butt pirate in me!
A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."