1.To jizz too early
2.To not have enough jizz
3.To have a cumshot and miss you partners face completely
4.To accidently jizz on a guy in an orgy or gangbang
5.To jizz in your womans vagina and either forgot to pull it out or forgot to wear a condom
I forgot to pull my dick out of my womans vagina and we had a jizzaster.