I read something like this but i can't remember!!!
I think it might be this gem by Harada: http://www.mangago.zone/read-manga/yajirushi/bt/306579/Ch0/
There's a cute little extra, too:
http://www.mangago.zone/read-manga/yajirushi/bt/manga/yajirushi/c001.1/pg-2/
Crap. Just re-read it and it doesn't have the whole scene you asked for. Gomen!
its ok...i dont mind...the manga you gave me fun to read too
This maybe? (from the same author)
http://www.mangago.zone/read-manga/yoru_to_asa_no_uta/mf/c002/19/
no, not this one..but thank you for your suggestion
im looking for yaoi manga..the seme is straight..when the uke is give blowjob to seme he says what so great about a men.. they dont have boobs and have a p*nis and only one hole..different from women...anyone know about this manga