Why did the ion cross the beaker?

Because it looked into my blue, blue eyes and realized that it just really ought to.

MY EYE.
HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA.

Which is more reactive?
Aldehydes!
Why?
Hydrogen bonding!
Class: Hahahahahahahahahaha

Leadership, Seamanship, Chemistry.

I found the hat guy from XKCD in the National Air and Space Museum South, as I like to call it. Compare!

In the span of three hours, I used the symbol σ (sigma) for THREE DIFFERENT THINGS.

Here, it is the radar cross section!

Here, it is the Stefan-Boltzmann constant!

Here, it is the name for the type of bond!

Point here is, we need to invent MORE GREEK SYMBOLS. The current amount is obviously insufficient!