To shoot and stab someone at the same time, preferably gangster style.
Bitch I will straight shastab you in tha throat if you eva talk bout my Moma again!
by JMDaigoro August 4, 2009
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The use of Shasta brand soda as a lubricant for masturbation
There were at least three open cans of Shasta by the computer when I got home, and the browser was still on a porn site. My wife must have been engaged in some serious Shastabation while I was at work.
by Shaolinstylze March 11, 2008
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