Chugging an alcoholic beverage with one hand, while placing the other hand behind your head & tilting your head back. Said to be originated by Karl Malone in 1963.
"Hey let's take a picture of all of us mailman'ing!"
"Mailman'ing - because otherwise you're just chugging."
"Mailman'ing - because otherwise you're just chugging."
by V Mailman February 28, 2008
Get the mailman'ingmug.