A man is flying in a plane when it crashes into the jungle. He survives, pulls out his phone, but the battery is dead.
He stumbles into a clearing where a group of natives are dancing around a totem.
“Excuse me, do you have a charger for this phone?”
“No, we don’t.”
“Do you at least have a phone I could use to call for help?”
“Nope, not here.”
“So, how do you communicate with the outside world?”
“We drum—then someone on that hill picks it up and drums it further…”
“For heaven’s sake, drum for help then!”
One of them picks up a drum and starts: “boomtarata boom boom bang bang.”
After a while, from the hill comes a reply: “boomtarata boom boom boom boom.”
“What did they say?”
“They said… we’ve drummed our way into voicemail.”