The Hills Season Finale Sneak Preview: Spencer Pratt Fears Sperm Has Been Hijacked

The fifth season of The Hills comes to an end tonight, and Spencer Pratt is stressing that Heidi Montag may be knocked up despite his wishes and efforts.

In a basketball-court chat with Brody Jenner about her sneaky attempts to get pregnant - with or without his consent - Spencer laments his predicament.

"There's a chance that I'm about to be Pratt Daddy for real," he tells Jenner, noting that Heidi's gone rogue and he found a pregnancy test in the trash.

After telling Brody about their "conversation," Spencer Pratt is informed by his old friend that it's not really a conversation if no one listens. How true.

Spencer and Brody: BFFs 4 life (as long as LC's not around).

Still, Spencer continues, saying that Heidi's tactics amount to "like a sperm kidnapping." Adds a smiling Jenner: "That's scary, man." Oh yes. It certainly is.

It might be more compelling if there were a chance in hell she was actually pregnant, but somehow we doubt the show will stun us with that revelation.

Also tonight, we will see how the fake love pentagon between Brody, Justin-Bobby, Kristin Cavallari, Jayde Nicole and Audrina Patridge is resolved. Woo.

Follow the jump for a clip from The Hills finale ...

The Hills Season Finale Sneak Peek