Another reason to try your own semen is if you ever give a guy oral love, you'd best be prepared for how it tastes.
I think that would probably help, but there's really no way to be completely prepared, since yours likely tastes and feels different from your partner
of course, you could always get lucky and theirs will be almost exactly like yours
I can suck my own richard
lucky
well, is that really luck? I think it mostly just depends on your physical condition, so most people could probably do it if they worked on it

