it does not have to fuck up your cock! it can be done sanely in a way that it proportionally will increase the size of your dick for a day or so. I pump sometimes because I like the feel of it..I like the heft of a massively huge cock hanging between my legs. I usually do not pump for sex, but the few times I have, I have done so in a way that it just gets bigger but not freakish. and when I have pumped before sex, it was not obvious that I had pumped and they did not realize that I had, but everyone said that my cock just was bigger and thicker that time..so they did notice that part of it, but thought it was just I grew bigger than normal then