pig sock
During dry, anal sex, the dude pulls his cock out so fast that her anus gets ripped inside-out, and hangs from her ass-hole like an old sock.
While I was doing her in the butt, the phone rang, and I jumped to answer it, leaving her with a pretty nasty 'pig sock'.
Sock pig
A guy (usually gay) that enjoys sniffing another guys stinky socks or socked feet during anal/oral sex.
Tom is such a sock pig, after sex he keeps the dude’s stinky socks to sniff when jerks later.