nice one bro sony...
i had something similar before...but mine was the teh kor of my cousin....i used to sometimes stay in my auntie house when i was younger...abt sec 2 & 3...during my shower, i would used my cousin teh kor to wrap around my cock shaft and pump it...(note : i dun use hand jerking action here, but only my butt thrusting forward)
i must admit it might be nothing close to the tight warm closure feeling u would experience in your method, but mine was mind blowing for me, at least during that time....