LOL! This scene from Thor: Ragnarok where Thor tells the story about Loki transforming into a snake and then stabbing him really demonstrates how much of a jerk Loki has always been:

Here’s the full quote of the Loki transforming into a snake story:

Bruce Banner: “Quick FYI – I was talking to him a few minutes ago and he was totally ready to kill any of us.”

Valkyrie: “He did try to kill me.”

Thor: “Yes me too. On many, many occasions. This one time when we were children he transformed himself into a snake. And he knows that I love snakes. So I went to pick up the snake to admire it, and he transformed back into himself and he says “MYAH it’s me”. And then he stabbed me. We were 8 at the time.”

And here’s the clip: