1 definition by bigmackmomma4lyfe
Most often seen among a group of friends who reunite after an extended period of time. These friends rejoice in eachothers company oftentimes by making displays of emotion in the form of hugs, kisses, groping, caressing... etc.
"Wow dude, look at that sexy mack sesh. Those girls must have gone really long without seeing one another!!!"
by bigmackmomma4lyfe June 24, 2009