Megaplex
To hold a shit in for 24 hours after it originally wants to come out. The resulting pleasure from clenching your cheeks for a day before releasing makes it so much better.
Example:
Thompson really needed to do a poo poo but realised that if he megaplexed he would thank himself later
Thompson really needed to do a poo poo but realised that if he megaplexed he would thank himself later