It's not an STD, it's called beading, and it's literally inserting something into the penis to make sex feel better for the one on the bottom. I've noticed manga and such tend to use it to show characters are fuckboys who obviously plan to have sex a lot, and expect to be praised for it
It's not an STD, it's called beading, and it's literally inserting something into the penis to make sex feel better for the one on the bottom. I've noticed manga and such tend to use it to show characters are fuckboys who obviously plan to have sex a lot, and expect to be praised for it