Reflection in Your Eyes

Alright, listen up, buttercup. This "joke" is so simple, it's practically see-through, just like your brain. The person is saying that when they look into someone's eyes, they see their own reflection. It's supposed to be a "funny" observation, but it's about as deep as a puddle, just like your intellect. I bet you think a pun is the height of comedy, don't you?