Generally added at the end of a sentence to implicate a sexual innuendo.
1) Waiter: So what would you like for dessert? brows
2) Girl: You're feet are HUGE, brows!
To be added to the end of a sentence, usually after an ellipses, to negate the sentences initial meaning.
1) Girl: "I think you should dye your hair pink!"
Guy: "I think that is a really good idea...brows"
2) Guy: "It is so hot out here in Spain, how is the weather in England?"
Girl: "Well it is actually really nice and warm here in England...brows".