Millie increases the stakes

Millie dives down on my cock, and immediately takes it deep in her mouth. She holds it there for a while, then her head starts moving up and down quite quickly. She pushes her tongue up against the shaft of my dick, and I lean back and a groan of pleasure escapes from my mouth.

Millie keeps going for a few seconds, but then she suddenly stops and uses her hands to make the "time out" sign. Millie is still kneeling in front of me, and she looks up at Patti who is standing next to her awaiting her turn, and says:

"Care to make this interesting?"

Patti looks down at her and says:

"You're on, what's the bet?"

I sense a bit of sister competitiveness going on here, I think to myself.

Millie gets a glimmer in her eyes, and says:

"Loser gets fucked in the ass."

Patti rolls her eyes and says:

"Millie, I don't really do anal, you know that."

"Oh, so you know you're going to lose then?" Millie replies.

"Fine, the bet is on." Patti says. Then continues: "Will be fun to watch you getting fucked up the ass after you lose."

Millie stretches her hand out towards Patti and says:

"Shake on it?"

Patti takes a step forward and shakes Millie's hand.

They look at each other for a while, then Millie says:

"Reset the stop watch."