Definitions by Quasar32

tswmh 

Used on instant messaging systems in response to a humorous message that was not quite funny enough to reach 'lol' status. It is most commonly used when the conversation is more serious in nature.
literally "That Statement Was Mildly Humorous"

Serious Person A "I seem to have spilled hydrofluoric acid on my leg."

Serious Person A "I was just kidding."

Serious Person B "tswmh"

tswmh by Quasar32 February 15, 2009