The act of strapping an explosive device (fireworks, firecrackers, hand grenade, etc.) to one’s erect penis before ejaculation so as to coincide the explosion with the climax, typically while receiving anal sex.
Dude, I got a ShaftBlaster last night from my girlfriend, I wish I could do it twice!
Rebecca decided to herpes fuck John. He had a gross blister shaft, but he was really hot. She made him wear a condom so she figured she would be safe.
Two days later her pubic hair started itching. She didn't get the herp, but she crabs.
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.