SRM is an acronym for Stark Raving Mad. It's useful to use when confronted by SRM people, when one wishes to indicate their mental state to a friend, but not let the SRM person know what you are saying.
Eddy was buying shoes from a "nutcase" in a store and wanted to let his girlfriend know what he thought of the salesperson. He wispered to her "SRM," and she immediately knew what he was thinking; even though the salesperson had no idea.
Stands for sonicrocksmysocks, an extremely good anime artist, singer, and comedean. She can be found at Deviantart, Sheezyart, Youtube, and Myspace. SRMS is freinds wih wonchop, Kewpie, and several other artists.