The project management of online dating...remembering what you said to whom and when on which social network or dating site...and maintaining a fully auditable digital record of said exchanges for legal purposes.
Engaging in excessive metaphysical speculation. Especially common practice among psycics, french philosophers, and philosophy majors looking to lure unsuspecting english majors into sexual congress.
The act of mentally envisioning erotic acts and/or situations in public after viewing an erotic image ie a sexy advertisement or an attractive woman.
Alex: dude, I saw that guy looking at the sports illustrated swimsuit magazine in the gardening section at the bookstore Kyle: Yeah, he was totally mentalbating