obviouslut
When someone is so clearly a slut that even your grandma can see it from across the street.
My ex walked in wearing a bikini and a smile. Obviouslut. I almost threw up.
She texted me a selfie in her bra. Obviouslut. I blocked her.
He flirted with three girls at once. Obviouslut. I called him a f***ing idiot.