Imagine you're walking through the forest. It's been raining so the ground is muddy and slippery underfoot.
As you carefully pick your way over a particularly tricky bit of terrain you hear a crashing sound coming from the undergrowth, which clings to the side of a steep slope to your right.
Looking up with surprise which rapidly turns to shock you see a fully grown elephant sliding down the muddy slope towards you.
The last thing that goes through your head before your body is smashed into the ground by 4000kg of rapidly moving pachyderm is just how happy it looks.