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A similar abbreviation to lol, defined 'laughing my tail feathers off'. Expresses amusement, literally laughing, but often used to express even small amusement.
When a board user thinks a discussion about election is funny:
LMTFO I just logged on, and thought you guys were funny for debating my presidential dreams. LOL
by Curs March 27, 2008
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"Leave me the f**k alone" used when very mad
Lmtfo I'm tired of you being annoying af!
by Lmtfo May 31, 2017
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