by SmashClover June 18, 2007

by Deets! October 19, 2009

by lulmeister November 7, 2011

"lightly undulating laughter" - a texting abbreviation revealing a chuckle occurred in real life, a sly chuckle, or hehehe
by ΔΞΞ June 8, 2016

"Laugh Under Loud" - as opposed to "LOL" which stands for "Laugh Out Loud", lul is used to describe a slight laugh after a lame joke is told.
by Feral0093 January 26, 2010
