[DIY] "Do it yourself"

[DKDC] "Don't know, don't care", usually used when a person is […]

[DL, D/L] "Download"; receiving data from a remote host. Usually functions […]

[DLF] "Dropping like flies"; said when many participants have left a […]

[DM] "Deathmatch". A gaming mode with the goal of fragging as […]

[DMY] "Don't mess yourself"; from an episode of The Simpsons.

[DnD] "Do not Disturb" or "Dungeons_&_Dragons"

[do] See: [HAVE DONE], [HAVE DONE WITH], [HAVE TO DO WITH], […]

[do a double take] {v. phr.}, {informal} To look again in […]

[do a job on] {v. phr.}, {slang} To damage badly; do […]