(That last one might have been a slight paraphrasing.)
"Free? They gotta pay for that s**t. You think I'm just made of dicks?"
It was a vendetta Akeley would get the opportunity to act on: During an African expedition, he came across a leopard and failed to kill it with his rifle. Either this was one of those notoriously dangerous "countin' leopards," or it was just feeling lucky, because the cat lunged right as Akeley ran out of ammo.
With no other option in sight, he grabbed the leopard by the throat and started jamming his right hand into its mouth. The cat, initially surprised that its dinner was doing all the work for it, soon found itself suffocating. Ignoring the pain of being partially (if voluntarily) eaten, Akeley kept right on pushing his hand deep into the throat of the beast, choking it from the inside. In the end, he managed to kill the leopard with one long, slow, prolonged punch to the tonsils. You can see the aftermath of the fight in the picture below, featuring perhaps the greatest, and certainly the most justified, "I am so done with this s**t" face in all of human history:
Field Museum of Natural History via NPR
His only regret was that he didn't think of the one-liner "Human got your tongue?" until the flight home.