This term occasionally refers to a mans reproductive organ.
007aleta: What the f#$@?
Dark Oswin: Do i have to spell it out for you bitch? I can penetrate you, all you need is my penis, you'll be singing "uhn tiss" before you know it.
007aleta: You blow, dude.
Dark Oswin: That can be arranged too.......
joe pancakes: stop it you're so annoying!
me: uhntss uhntss uhntss uhntss...
joe: that's it, i'm going home.
me:uhntss uhntss uhntss uhntss..
~that's the proper way use the word 'uhn tiss'