Offer her a drink

"I have some beers in the fridge," you offer.

"Well, I ain't getting less thirsty as long as they stay in there," Doe says.

You return with a pair of beers, handing one to your new roommate. She takes it and puts down two slugs - a little too forcefully, as the beer foams up and spills all over her T-shirt. "Aw, shit," she says. "That was my last goddamn clean shirt. Got one I can borrow?"

"Uh -"

"Oh, fuck it," she says, and pulls the shirt off over her head. Her breasts bounce as they come free of the tight material, and her wet nipples harden immediately to tantalizingly large peaks, at least an inch long with aureola that cover half of each breast. Unconcerned about her partial nudity, she sits back down on the couch and takes another pull off the beer.

Naturally, you find it hard to take your eyes off her naked mounds.

"What?" she says, glaring. "Haven't you ever seen a girl's tits before? Well, get used to it, I live here now and I'll walk around without a fuckin' stich on me if I want to." She smiles derisively. "Fuckin' men are all alike. Show 'em a little tit and they get all hard and horny. Fuck, I'll bet I could get you off in five minutes just using my tits."