A sleep suck-gasm is the cumgasm a guy has when he fucks a guy in the mouth and has a cumgasm while he's asleep.
Matt occasionally has a sleep suck-gasm when he fucks my mouth and has a cumgasm -- I can always tell though, because I have his cum-taste in my mouth afterward!
Having or as if having an orgasm from a pair of socks (may or may not be referring to stripy socks). This is usually caused from an acute sock fetish reaction to a particularly liked pair of socks. Sockgasms may be suppressed or even eliminated from exposure to an evil sock monster.
"The blogger that I'm following just got a new pair of stripy socks, and I had major sockgasms"