Sperm can irritate uterus and stomachs. So, even if it's just a little, it can cause stomach pains and cramps. So it's important to wear protection at all times
Why though? Is semen acidic? Hahaha.
Sperm contains slight alkaline and it's pH is 7 .2-7 .4 so yeah, it kinda is. pH means how acidic or how much alkaline one contains.
Wow, now that’s some good info. I searched the pH of waste and it’s 6.6, lol, so now it all makes sense. Hahaha, thank you kind stranger! #randomfacts
You're welcome!! ლ(´ڡ`ლ)
Ok, I’m in chapter 18, and... any human being has like 2m of intestines filled with waste, why would a little semen give him a stomachache? It’s not the fist manga that mentions this crap. Can someone explain to me...? Is this just yaoi excuse to prod around? (⊙…⊙ )