Said when you see a hot girl (or even just a picture) that makes you want to drop and unload. Can also be used as an adjective for a hot girl. Also see fap.
Oh. My. God. She is so faptastic!
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When someone finds something on the internet that is easy to masturbate to.
George: I just found some awesome lesbian porn site!
Me: Thats faptastic!
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faptastic - something being utterly and totally fap worthy!
It's not just fantastic, it's FAPtastic
"Cor, did you see those pictures of her? Faptastic or what!"
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Yo that chicks knockers are faptastic. Chyeah
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Something so cool it makes you wanna go all fap over it!
This new movie, itΒ΄s FAPTASTIC!!!
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When some thing is so good/awesome you could just stop every thing you're doing and masturebate to it
Person 1: these burritos are just faptastick
Person 2: haha what???
Person 1: yeah its like every time I take a bite my taste buds start stroking there little pink taste bud dicks
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When you see a girl (or picture) so amazing that you just want to drop your shorts and get to work on that badboy.
Ugh dude this picture is sooo faptastic