"Uhhhhh." I swear that was a whole sentence about what an amazing job my little sister was doing. On how lucky I felt to have this experience for even a second, let alone for longer. A deep and entrancing monologue on the nature of love and its expression through lips and tongue given life over my cock.

"Seriously," Betsy said, "I want to be prepared when it happens."

"I...uh..."

Betsy took her free hand and cradled my balls. Right there, it was all over.

"Cuh... Uh... Cumming. Oh Bets! I'm cuh--mming!"

The orgasm that erupted from me was unfamiliar. Unlike any pleasure I'd known before. Not only because of the...