for males the act of masturbating using both his feet instead of his hands. in a modified indian style sitting position, the sole of both foot goes over the penis as it were the hands. the male individual will then commence pleasuring himself until the end result is satisfied.
Having both his arms amputated, Carlos discovered the Brazilian Jackhammer was his best bet to getting off.
by ChinoHD October 7, 2010
When a girl puts on a strap on and fucks a man in the butt while she jacks him off at the same time.
by The Jachammer September 2, 2011