Once you’re breathing again, tell the operator: “I’m so sorry, this was an accident.” That’s it. You can add “pocket dial” or “butt dial” or “my cat stepped on the screen” (yes, people say that). The operator will likely say, “No problem, please confirm your location so we know you’re safe.” Then you confirm, apologize again, and they’ll hang up.
Pro tip: Don’t lie. One time, I told a dispatcher my toddler grabbed my phone, and she just chuckled and said, “Happens five times a day.” They’ve heard it all. Honesty is the fastest way to end the call without drama.