In BDSM a "single-tail" is a single-lashed whip like a bull whip or a signal whip that is used by dog-sled riders. Floggers, cats, querts and other whips have 2 or more lashes. Paddles, canes, switches etc. are rigid and are less often referred to as "whips." Single-tails are particularly fierce whips.
I went to this crazy hot party last night. I saw this Dom, he didn't just spank his slave, he used a single-tail on her. Her back was a spider-web of welts. He was an artist. It was so fucking hot.
A type of sexuality where one person being so deep in love or obsession can only be attracted to/aroused by a single person not even other men, or, for that matter, women. Not even porn can do it for them, unless his/ her lover is in the porn. If the lover changes gender, he/she will still be hot for them.
Sometimes it gets to the point where he/she becomes a Stalker with a Crush or something similar.
The act of taking someone who used to be but is no longer fun and make them fun again.
Daniel: Dude, I moved to Sydney and now I'm all boring
Marc: Move to Melbourne
Eytan: We are going to singer you
Marc Singer the crap out of you
Daniel: Win