Found this on amazon....
https://www.amazon.com/dp/B0DP24QZNR/ref=pe_123899240_1043597390_SRTC0202IMG_SRTC99_cm_rv_eml_rv0_dp?th=1&psc=1
It is EVERYTHING I wanted for this fantasy. Put a super wubble bubble ball under it with a hose to blow into. I literally blew up my partner while having sex. Just the fact they agreed to do this was amazing. Highly recommend this setup for anyone who has a partner willing to play along.
perhaps she will blow up for 9 months for you ;) got to keep the blood line going.