Explosive Reach-Around
An explosive reach-around is when while one member of a sexual act begins to or is in the act of reaching around their partner receives an unfortunate amount of high velocity feces to either the torso or face from the person they are reaching around.
Tom: "Did you hear what happened to Richie last night?!"
Jerry: "Yeah man Jen totally pulled an explosive reach-around on him."
Jerry: "Yeah man Jen totally pulled an explosive reach-around on him."