Because they drink it before it's cool.
Baltiless
Because he drank his coffee before it was cool.
The nearest ISOBAR!!
Because Papyrus drinks plenty of milk.
With a old tampon in it.
Bag-in
It's a really obscure number and you've probably never heard of it.
From a well, actually.
You just put your lips together and whistle
Because then they'd have soft peckers