Paul had been really having a bad time after being transformed by the Fusion Wave.
The poor teen always had trouble with body image - his short height and thin build, and wider than average hip bones had caused many to mistake him for a girl when he was younger.
His facial structure was even slightly feminine, and his lips were ever so slightly larger than the average guy's.
Paul had tried to grow a beard to cover for this, but the most hair his face could muster was a famine-stricken field of peach fuzz.
Exercising obsessively and dieting to prevent any extra fat from being added onto his chest or hips (lest people think he had such womanly assets) Paul hoped to bulk up and gain enough muscle so that nobody would mistake him for a woman again.
Unfortunately, Paul was given a sleeper build.
Now, Paul was no misogynist. He just didn't like being picked on by some rather unsavory classmates - this affected him to the point that he started avoiding wearing bright colored clothing or any clothing that women normally wore - sticking to collared shirts of neutral coloration.
All of Paul's already failing efforts withered away with the Fusion Wave.
He was not turned into a woman, no.
Nor was he given breasts, or man-breasts.
The rest of his body wasn't even touched!
Paul's nipples engorged until they covered his entire pecs, before growing into round, large, male, uncircumcised Penis Heads.
Urethras and all, minus the shafts and exposed testicles.
Roughly as big as D-cup breasts, and bouncing up and down as he walked, the heads constantly leaked a small amount of pre-cum.
And they were hypersensitive.
A few accidental rubs to the urethra could lead to orgasm - as Paul painfully discovered.
If one went off, so would the other.
And as such, Paul was forced to wear, like other transformers with the same unfortunate transformation, large, sturdy, bra-like latex/plastic cups on his chest that not only caught pre-cum and allowed it to be drained through openable hatches, but prevented any clothes or substances from touching the heads. In the event that the heads might orgasm, the "bra" also could catch and hold the semen.
So now, no matter what poor Paul did, people would now for sure mistakr him for a woman - the two huge mounds on his chest could not be concealed.
And so, having grown bitter from all the stares and gawks he had been given by people, transformed and untransformed, strangers and friends and family, Paul only had one, sharp answer to anyone who even began to ask him about his new, false "assets".
"THESE AREN'T TITS!"