She knows I am a math and physics geek, but I would never tell her about my calculations. There will be another time for sure to run the experiment.

'Girth, it's the girth Sam. You and Dad are the same length, but you are thicker where it counts. Damn, I love it. Finally someone who can satisfy me, right here in my house.'

'Sam, I should ask you. Are you Ok being my... my... You know what? What do I call you? Sex partner? Fuckbuddy? Lover?'

'Are you asking me?'

'Kind of. Do you have an opinion?'

'I like fuckbuddy.'

'All righty then fuckbuddy. Let's do another position. Your choice.'...