PC.net

LMO

Meaning Leave me one
Type Acronym
Rank ★ ★ ☆  Average
Usage Online Only (chat, messaging, e-mail)
Comments

Means "Leave me a message;" used when someone is away from his or her instant messaging program to let people know they can still leave a message.

Updated January 2, 2014
Meaning Let's make out
Type Acronym
Rank ★ ☆ ☆  Uncommon
Usage Online Only (chat, messaging, e-mail)
Comments

A straightforward way of telling someone you want to kiss him or her.

Updated March 13, 2014
Information from PC.net
https://pc.net/slang/meaning/lmo
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