So an SLI and an LSI argue over whether or not juice from a large-mouthed container can be poored into a small-mouthed container, without a funnel, and without spilling any of the juice:

SLI: That's a bad idea. That's not going to work.
LSI: No, you're just dumb.
SLI: Wow. Are you serious?
LSI: Nope, you're wrong. Just admit you're wrong.
SLI: Okay, let's see.
LSI: So you admit you are wrong.
SLI: Come on, pour the juice. Let's see.

LSI begins pouring the juice into the smaller container. He doesn't spill any juice.

LSI: Yup...I'm right.
SLI looks at him and says "Good Job".
LOL, get it?