Acronym for “look me up.” A user of an app may want to share their contact information in their bio, but can’t depending on the website’s rules. The user allows others on the site to look he/she up based on their username.
Slayer225: I can’t put my contact information in my bio on this dating site, so I have to type “lmu” instead.
by classic_alfr3do February 13, 2019
In an IM conversation, when somebody references a webpage, or video, a person may say 'lmu' as an abbreviation for 'Link Me Up'.
by LMULMULMU October 18, 2011