Similar to docking and can be simultaneously be done in the act of docking,
The Big Bang is the act of pressing two penises together head to head, masturbating, and producing a massive explosion of cum comparative only to the creation of the universe.
"Johnny and Richard have a habit of creating The Big Bang every time they masturbate together."
The act of putting 5 or more penises into one vagina. It is important that all penises have at least one condom on. After they all enter they will cum at the same time and because of the friction each of the condoms will break. The mix of static electricity, sperm, and egg will create a super human.
Emma wants to perform the Big Bang, are you guys down.