I was revenge baby. 

My bio dad is not the best man, and cause my mom to have a miscarriage before she had me. Mom was ready to be a mom, but my bio dad wasn't ready to be a dad. So when mom has the miscarriage cause by my bio dad, she thought that he owed her a baby. So mom poked a hole in the condom right before the revenge sex. 

Said revenge sex was had in a McDonalds walk-in freezer.