Dictionaries:
M/M:
In personal ads, stands for male-on-male, used especially with reference to homoeroticism .Link to this page:
The Language of Love, Lust, Sex
and All the Many-Splendored Things in Between in Teenspeak - Jockspeak - Menglish - Slanglish - Spanglish
Gaylese - Americanese - Britspeak - Ozslang - Funetic
Populo-Vulgar Speech - T-Shirt & Net Shorthand
Pompo-Verbosity & other Figurative Lingos