The art of fapping with rediculous might or strength.
I was totally engrossed in my thunderfap session when my mom walked into the room...how embarassing!
When your entire body cramps up from a single masturbation session with the most glorious orgasm you've ever had.
Damn dude, I saw some shit so crazy last night I thunderfapped and spent the morning in the ICU
the act of fapping so hard while playing super Mario, that it sounds like thunder
Mike: dude, what happened to your arm? did you hit the gym or something?
Mark: nope
Mike: then what?
Mark Italian thunderfap!
Mike: all day everyday!
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