A streak or small turd left by the anus on the chest just below the breasts during the act of titty-sex.
Man Joanne has big tits! I'm sorry I left a brown necktie when I screwed them!
You're about halfway through ass-wrecking a chick, and instead of filling up her keister with your demonseed, you pull out and proceed to tittie fuck her, leaving a brown streak between the funbags.
"I gave that random trick a brown nectie last night."
While you are slammin your chick in the ass, pull out and titty fuck her.
She will soon be left with a brown neck tie.
Last night I was packin my girls fudge, when I decided to fuck her titties. The shit in between her tits looked like a brown neck tie.
To screw a slut in the ass and then titty fuck her with your shitty dick.
When you take a dump between a chicks tits then fuck the shit between her tits. You can take it a step further as she sucks your dick when it pokes out the top of her tits.
After getting yet another crappy tie for christmas, i gave my wife a brown necktie of her own.
The act of taking a dump, but holding that dump hanging out of your butt cheeks, then recieving a tit wank. Leaving the tit-wanker with a brown tie.
Ross: You and Cath done anything ravishing lately?
Dan: Didya see that Brown Necktie she had on the other day?
Ross: Oh yeah.
Dan: My work.