Nothing to do; not doing anything important. Last Friday, we were just messing around because the boss was gone.
MESP - MESPP - MESQ - MESS - MESSENGER - MESSR - MESSRS - Messrs. - MEST - MESTI
"MESSING AROUND." Abbreviations.com. STANDS4 LLC, 2016. Web. 10 Dec. 2016. <http://www.abbreviations.com/MESSING%20AROUND>.