Basically, the gist of the game was that when you were with a group of friends, at any random time, a member of the group would stick their finger to their ear, as if receiving a message. Eventually, others would notice and copy the movement, and whoever was last upon sticking a finger to the ear or hadn't noticed gets tackled to the ground regardless of location, and the others would yell "Get down Mr. President!!"
Bob: We played Get Down Mr. President! downtown yesterday. We almost got hit by a car.
A very fun game that may or may not end in someone being injured. A group of friends can play this. Someone starts it by pressing a finger to their own ear like a secret service agent would. The last person to do this is "Mr. President" and everyone yells "Get down Mr. President!" And they tackle him to the ground.
"How did you break your arm?"
"Well we were playing "Get down Mr. President" and my friends tackled my onto a rock."