Acronym of the phrase 'Let's Move On'. Most commonly used in three contexts:
1. To express the idea of accepting an event
2. To change the topic of conversation, often used in awkward situations
3. To express the sentiment 'forget about it' or 'get over it', often used to mock
1. I'm still annoyed with you for sharing my secret but LMO
2. 'So what bra size are you?' 'That's an awkward question...LMO'
3. 'I think I'd be a good model' 'Lol mate it's not for you, LMO'