So something just crossed my mind:
I think that at this point I don't have to state out that I'm obsessed with Wheeljack, but that was not it -
- Imagine a human AU, where this guy marries and actually has a kid. Of course, he'd love the heck out of the little toddler, and would probably want to get it interested in as many things around it as possible. But there comes the fun part - knowing how much their s/o is prone to getting themselves injured with absolutely everything they get their hands on - can you imagine the amount of safe/babyproofing the mother would have to make? And no, we are not talking just the homespace - but making a baby outfit that would be able to protect it from any possible injury their crazy dad might unintentionally cause - and "no Wheeljack, you are not allowed to work on that outfit - that task goes to Ratchet only! And Primus help you if I EVER find him/her in your lab!!"