Erica's birthday gift to Simon

On the celebration of Simon's birthday this year, your girlfriend Erica gave him two gifts.

The first gift was the same as what every other fuck-buddy of Simon's got; a breast enhancement. Simon likes his women stacked, implants or natural (Heather does, too). Erica went to a great plastic surgeon, apparently, and now boasts massive boobs. She occasionally lets you fondle them (and cream in your pants right away), but Simon enjoys them way more often, of course.

The second gift is making you have a vasectomy - it's a short, simple statement; Erica will not have your children.

Years of embarrassment follow onward, as Erica and you marry, Simon and Heather marry, the four of you end up neighbours, and Heather gives birth to Simon's son.

They name him Richard, and he grows to be an impressive lad indeed; a charismatic, tough jock, even in his pre-teen years. He has inherited his parent's good looks and fitness.

Shortly after Richard turns 18, you arrive home one evening and hear him talking to your wife...suggestively. Neither has heard you come in, and Erica seems seriously distracted by the young man. In your bedroom, he is trying his best to flirt with Erica.

From what you've heard, Richard does date a few women here and there...but is he a horse-hung stud like his father? Maybe he's even bigger than even that thick twelve inches of Asian meat! When he was 13, you distinctly remember Heather making coy comments about how "well developed" he was, but just how MUCH bigger than you is he? Even an average dick is superior to you. Having even a pre-teen outsize you was pretty darn humiliating...

Will Erica cheat on you on the young man? You watch it all play out from a crack in the bedroom door, spying in silence.