"Hand-Blam" is a term for masturbating, and can apply to both male or female masturbating activity provided hands are used.
I was driving from Newark, NJ to Houston,, TX and whilst driving the thought of beautiful Gloria in her two-piece bikini standing before me entered my mind, and before I knew it I was hand-blammin' while at the wheel of van, and shaking what handblam I could off the left hand out the van window. Afterwards I felt violated, and considered this to be some sort of perverted moving violation.
by The Reverend Soul Train February 17, 2016