Proktoloukoumo
The word Proktoloukoumo has a greek origin and it contains two greek words. Proktos and Loukoumi. Proktos in greek means ass, or butthole. Loukoumi in greek means cruller, so Proktoloukoumo is just a reference to the butthole, which looks like a cruller.
My shit was so big that my Proktoloukoumo hurt.