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2.
A super hardcore sexy time with a woman.
"Blimey, I just had a well good super shag"
by Carnage44 April 22, 2008
 
1.
the process of using both hands and putting them both down your pants, adjusting yourself from itchiness, discomfort, or sweat.

Different from a regular shag, as a supershag uses both hands, as opposed to only a typical one-handed adjustment.

This action is not preferred when in other people's sight, for it is not nearly as subtle. However, the results are fantastic.
I'm supershaggin right now aw yea oshit someone saw me i think it was tanya oh shit i like tanya but i bet i wont get any with that i should be more careful next time.
by Mr. Owl Knows How Many Licks June 20, 2011