Spontaneous Duplication

David found himself in a rather awkward and uncomfortable position meanwhile.

"Brad, I don't know who this is or where she came from! But I swear, up until now I was an only child! And she definitely is not my secret twin sister!" David heard an agitated female voice to his right.

"I don't care who she is as long as she fucks like a rabbit, Susan!"David suddenly heard from the guy in front of him who he supposed was Brad.

All the while he felt like he was stuck on a hard metal rod...