Look at the big brain on Brad lol. Man do you read a lot or are you just smarter than the average bear?
Smarties guyz read a lot! Haha anyway vacuum related I learned by observing closely the blow job art from some bitches... or from kiddos sucking their mom s breast... I studied very closely what was happening into the mouth of both... bitches then kiddos breasfed... we made a study in Massachusetts in the 90s, with x Ray / infrared camera
Girls “suck” a penis because “sucking” removes air from her mouth and let the soft tissues adhere to the gland... anyway a mix of changes in pressure is optimal for the perfect blow job...
Wide open mouth let the production of some particular sound waves that stimulate man hypothalamus to release more nitrous oxide and then bigger erections and bigger prostate’s vesicles contraction (because of bigger blood load) , that translate into bigger loads of ejaculate. But, when the blow job performer applies a strong vacuum into her mouth, the tongue and sub tongue soft tissues strongly rub the gland , because as stated of the negative pressure that keep stuff “glued” together.
same for breastfed kiddos, they strongly suck nipples because then the milk is forced to come out from glandular tissue by the mammary ducts, because of the negative pressure exerted by kiddos that sucked out air etc.
I’m fuckin into this stuff right now , I need to suck some breasts while another girl blows me...
Negative pressure and Vacuum are the true wonders of the universe...
Btw the Massachusetts study has been done in
@janoshik s lab by me and
@TrennedOutLunatic , good old times... Ronnie Coleman wasn’t yet Mr Olympia, music was cooler then now, and Gear was fire....