by Satalballs December 04, 2023
by ayy not aye December 07, 2024
This is an abbreviation for "just a mustache". It refers to the popular style of past of men sporting "just a mustache" without any other facial hair whatsoever. JAM was popular in many decades before the 1980s, but seems to have gone to the wayside since then. Often, men sport JAM in situations almost as a joke. This term was coined in the 1990s in Sarnia, Ontario and anyone who thinks they coined it before then may have done so concurrently, but not before me.
by simonchuck June 22, 2009
by Jamid739m2 January 28, 2021
by J. Presh October 02, 2018
by Jamfan November 22, 2021