A euphemism for sexual intercourse started by a group of Japanese students. The phrase "waist-shake" is usually accompanied by pelvic thrusting.
Hiroshi walked up to Mai and saying "Waist-shake?" immediately began pelvic thrusting in her direction.
by Pretentious June 21, 2005
Get the waist-shakemug. to engage in sexual intercourse.
by freds July 21, 2008
Get the waist shakemug.