Top Definition
Self Appropriated Sexy Time, or masturbation. Originated on the fan forum Murmurs.com.
After engaging in SAST, Derek would konk out for hours.
by ermbark June 08, 2006
1 more definition
(adj). Super, Awesome, Soft, and Touchable. Usually followed by the word "hair".
Bob: You have SAST hair.
Jane: Why thank you.
by Noah K. January 06, 2006

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