Doing math homework or writing a math portfolio (especially for IB) that is so EXCITING that you feel sexually stimulated in the process and have an orgasm once you're done.
Alan: Sorry man, I can't go see "I Am Legend" with you guys tonight because of this stupid IB HL Math Portfolio on the Koch Snowflake that I have to write...
Barzeen: Don't even bullshit me, Alan, I know you're just gonna jack off all night anyway.
1. In an attempt to prove a point, gathering and assembling data in such a way that one only convinces oneself of its validity
2. Trying to justify an incorrect opinion, statement, or assumption, by manipulating available data in a way that is only satisfying to the person with the incorrect opinion, statement, or assumption.
He rattled off a bunch of obscure statistics to defend his vote on the stimulus package, but it was all mathsturbation.