With his own saliva

Brent crouched down in front of Samantha and Karl. He slowly, teasingly worked his way up, licking Karl's balls and then sliding his long tongue up the monstrous shaft. Gathering up some tangy precum, he held it in his mouth and approached Samantha gently.

Brent kissed her tailhole lovingly, preparing her for the intrusion it was about to receive. He started to apply Karl's precum with his crafty tongue, massaging around her pucker with a circular, grinding motion. She moaned in anticipation, encouraging him to move on. He finally pressed at her tailhole, sliding in once it had given way. Samantha gasped, and Brent giggled a little in the back of his mouth.

He caressed her tight, silken tunnel with his tongue, lashing at her insides and coating them with the sticky precum. Her breath quickened as he slipped in and out of her faster and faster. She moaned at the attention she was receiving. Finally, Samantha decided she was lubricated enough.

"OK, that's good! Now hurry up and fuck me already!"