It's a stormy night. Your wife and family are gone for the weekend. There's a knock at the door.
"We're so sorry to bother you, sir, but could you please tell us where the Gregorys live? This is the third house we've tried. Looks like everyone's gone for the long weekend."
I open the door to see the two soaking wet young girls. One is blonde with a pink tank top on. Through the wet fabric you can see her black bra.
The other has dark hair, with a grey wet t-shirt on, clinging to her large breasts.
I invite them in to use the phone. They're standing in my entryway, dripping everywhere. You head off to get some towels.
This could get fun, you think.