Hey, Kid,
How's it going, I'm Sans the Comic,
Come on in, we've got burgers and so much more.
Stay a bit, you can hear my terrific humor,
Take a sit, it looks like to me your legs are sore.
But,
Don't think twice,
I know all of your dirty secrets,
So don't try shit
Or I'll end your fucking life
But hey!
If you're good, I will show you around
Snowdin Town,
It's so great, if you're not a fucking murderer.
Shop at the shop, you can buy some delicious sweet buns
They'll heal you in battle, but you better not get into any battles or I'll kill you

"The Sans Song" sung by @paper-mario-wiki on Tumblr

I know these lyrics by heart

Addiction

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The Sans Song animated by Jennifer Parisi