roflwec Share definition Flag 1. Rolling On Floor Laughing While Eating Cheese. take off of rofl. 2. can be shortened to wec even though it doesnt make sense 1.Ben: hahahah did you see that tv show last night. tom: year i was total roflwecing. 2. Ben: i had the biggest weccing sess just b4. roflwec by beasoo,t December 31, 2007 Get the roflwec mug.