look up any word, like hipster:
 
2.
a good solid conversation that probes deep into your inner emotions (this sounds like Freud or something, doesnt it?)
It was a memorable experience, now he likes me. (?? i dont know either)
by Avanti February 19, 2005
 
1.
the act of engaging in intelligent and interesting conversation. Topics range from sex to nerdy subjects.
I enjoyed our mental intercourse today. Perhaps again, tommorrow?
by John June 20, 2004
 
3.
imagining intercourse with someone you find attractive
"Shit, if the real thing is as good as that mental intercourse i just had...."
by DB February 19, 2005