1 definition by L.Train

What you must use for a period on Facebook. On Facebook the period key suddenly becomes disabled on your keyboard when trying to leave a comment or status so you must put lol at the end of your sentence even if what your writing doesn't even make you laugh out loud or is even the slightest fucking bit funny.
Person 1: r u picking up the milk on the way home lol
Person 2: yea lol
Person 3: lol
Person 1: what was so fucking funny person 3 lol
Person 2: yea person 3 lol
Person 3: i really don't know lol
by L.Train November 24, 2011
Get the lol mug.