Referring to any person, male or female, gay or straight, who has lost interest in having any form of sex with anyone. More specifically with their partner of long standing. (Not to be ascribed to anyone with health conditions which would preclude sex).
"He never wants to have sex with me anymore, he's bed dead." or "We used to have such a hot relationship, but she's just bed dead now."
by Joan1 June 01, 2013