When my lab has come
And my mind is dark
Per-i-o-dic ta-a-ble is what I need
No I won't make mistakes, and I can, save face
Just as long as I have, Mendeleev

He helps me, with my, Chemistry, Mister Mendeleev
Chemistry, Mendeleev

If the page that I look upon
Should crumble and fall
From my lab bench, to its designated bin
I won't cry, I won't cry, no I won't shed a tear
Because I, trust my man, Mendeleev

He helpes me, with my, Valency, Stoichiometry
Mendeleev, Chemistry, Mendele-ev, yeah

When reactions give you trouble think of Mendeleev, oh now now Mendeleev
Oh Chemistry, Mendeleev, so easy

Chem tute work is, so easy, (with) Mendeleev
Oh Chemistry, Valency, Mendeleev

Indie singing to his sidekick about how to be safe from Zombies.

 When the night has come
And the work begun
And my torch/streetlamp is the only light we see
The undead are so safe, so do-on't be afraid
Just as long as you walk like - a zombie

So shuffle, darlin', like a zombie, then come and stand by me, move
just like a zombie, and stand by me

If the guy that you look upon
Should stumble and fall
And a mountain be overcome by an undead sea
they don't cry, so don't cry, no you mustn't shed a tear
Just keep on imitating a zombie

(When I say 'a mountain', it's a metaphor for probably the biggest person in cast)

And darlin', darlin', stand by me, oh stand by me
Stand by me, stand by me, stand by me-e, yeah

Whenever you're in trouble won't you stand by me, oh now now stand by me
Oh stand by me, stand by me, stand by me

Darlin', darlin', stand by me-e, stand by me
Oh stand by me, stand by me, stand by me