I can manage to say something at the beginning of an orgasm or stream of orgasms, but its not usually very coherent. More often things like "yes" and "please" and "mmmmm". I recently managed "I love you", which is a whole sentence, coherent, and appropriate. Combined with eye contact.

After an orgasm, I'm even *less* coherent. I manage to say things like "dead" or "mmmmph" on very rare occaision. Oh yeah, and once I managed to use hand signals to convey "please lead me over to a surface I can collapse on" after an unexpected orgasm whilst standing in a friend's dining room.