The Firecracker

When you stick a molotov cocktail and a firework in your urethra and engage in intercourse with someone, then when you unload, it detonates the firework and the molotov shatters inside.

"Yeah, my and my girl did The Firecracker last night. I think she's unhappy.

D-Day

When you charge at a girls pussy whilst other man ejaculate towards you and you try to get it in.

"Yeah, we all did the D-Day last night. It was pog."