"Chemistry song 02" joke

The Chemistry Teacher's Coming to Town
You better not weigh
You better not heat
You better not react
I'm telling you now
The Chemistry Teacher's coming to town.
He's collecting data
He's checking it twice
He's gonna find out
The heat of melting ice
The Chemistry Teacher's coming to town.
He sees you when you're decanting
He knows when you titrate
He knows when you are safe or not
So wear goggles for goodness sake.
Oh, you better not filter
And drink your filtrate
You better not be careless and spill your precipitate.
The Chemistry Teacher's coming to town.