to involuntarily expel a beverage that is in one's mouth in reaction to a startling, usually humorous, event.
by Sprout February 9, 2004
Get the gerbmug. by Gerb - J/J/C July 6, 2004
Get the gerbmug. To cry, to weep, to shed tears. Especially in reaction to chick flicks and holiday film favorites. Refers to the Gerber baby found on the Gerber Baby Foods label.
by DaddySee December 4, 2010
Get the gerbmug. A gerb is a shortened name for a gravity bong originating from the Hill Country in Texas. It is generally made from a water bottle with a winches socket in the cap as the bowl.
by gerbmaster January 22, 2020
Get the gerbmug. by genocide October 9, 2003
Get the gerbmug. 
