Getting an extension for an assignment and then getting another extension on top of your original extension.
Student 1: I really can’t be bothered doing my assignment.
Student 2: Don’t worry, just do a cleasby!
Student 2: Don’t worry, just do a cleasby!
by CBlockPerson July 24, 2018
Noun. Sexual intercourse between two consenting males wherein spherical plastic objects (ping pong balls) are lubricated with cooking grease (typically Crisco) and inserted into the recipient's rectum.
Male 1: "Bro, I totally want to take you back to my loft in uptown and give you a Cleasby."
Male 2: "That sounds brotacular, bro. Let's go back to your place and have a big old Cleasby Brodeo!"
Male 2: "That sounds brotacular, bro. Let's go back to your place and have a big old Cleasby Brodeo!"
by Mean little Jenny August 1, 2009
To do a Cleasby is to do something so fantastically stupid that your friends will think That there was major complications with your birth.
by Winibob January 13, 2020
by 0ttpxr March 5, 2022