D+M

Standing for "Deep and Meaningful" standing for when two (or more) friends are at a pub, club or party aside from other friends talking privately about something major (or seemingly Major). It can be a couple in a relationship talk but can just as likely be friends talking about earlier events or comments that have affected them, and wish to discuss in private without leaving the pub/party/club/etc.

With Circles of friends, when they are in a D+M it is advised to steer clear of them until it is finished unless you are definitely sure you're sure of the topic and it geneuinely relates to you.

If unsure ALWAYS check with someone else within the group of friends, who is NOT participating in the D+M to check whether it is ok to approach them and talk.

an anacronym for "Drain the Main Vein"- meaning to take a leak.

Stands for "Don't @ Me". Used on Twitter when you don't want someone tweeting at you.

deep and meaningful conversation. Also d'n'm

Disaronno & milk

Don't @ me. Usually used when you say something commonly disagreed with that you won't change your opinion on, or don't want to hear other peoples' opinion on. Often used as a joke or with an obviously exaggerated/satirical opinion.

Some people think DOM means dirty old man. They have filthy minds.
People with clean minds know this means Distinguished Older Man.