//Uhh a little TMI lore for Cell here but my VERY LONG WINDED reason why Cell can procreate with his famer wife
As a consequence of his botched reincarnation process (it messed with his entire body, not just memories), falling through the dimensional rift caused permanent cellular-level damage. Something he was woefully unaware of until it was far too late.
Over time (most clearly observed during the first winter on Misty Farm), Cellโs stinger became functionally redundant. It could no longer generate Cell Juniors or absorb living lifeforms. Eventually the tip detached entirely and the residual structure atrophied as a result. No amount of crazy glue was gonna get that back on.
In response, his body underwent a natural compensatory adaptation. Dormant Saiyan genetic material (inherited from Goku and Vegeta) activated under the sustained proximity and physiological compatibility with a fertile human female. The saiyan race thrived on fighting as much as they enjoyed increasing their numbers, forcefully or otherwise. They're quite biologically compatible with many humanoid races (Much like the Viltrumites imo) This activation produced a fully functional male reproductive organ, housed and protected within the black codpiece structure until arousal.
(Think a jack in the box, wind him up enough and SURPRISE!! But it goes right back into the box when the fun is over.)
By some miracle, this allows his very specific Cell genes to be passed along by proxy, allowing conception to be possible.
It should be noted that any potential offspring he'd have with Honey will ALWAYS be male. Each subsequent generation of his newly built species will have a horrendously small chance of bearing a female (But we're talking like.... many, maaaany generations before the first girl arrives.) I'll get more in depth about the species they'd create together at another point, we're losing track here...
The same unforseen Saiyan influence is directly responsible for his marked increase in hormonal drive, hunger pangs, and acute carnal awareness that he begrudgingly experiences. These sensations amplify in Honeydewโs presence and only become increasingly difficult to suppress.
Spoiler, but those resistant feelings die really fast after enough lonely goon sessions... And waaaaayy too many dreams about pulling on her apron strings if you catch my drift.





