Some old Classic Lame Jokes

This joke was told to me by someone with the exception of the extra stuffs I put in here. Well, so I am here to share it.
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danielctw: What stays underground and eat rocks?
Sor Jai: Err..Worm??
danielctw: Wrong. It’s a rock eating monster
Sor Jai: WTF! Like this also can.

danielctw: Ok, ok, Now proper one, what stays underground and eats sand?
Sor Jai: A sand eating monster
danielctw: Wrong, it’s a rock eating monster on diet.
Sor Jai: T*u, I’m so gonna kill you!!!!
danielctw: ROFLMAO

danielctw: Ok, then for the final question, you’ve got to know science. What if the earth was drilled from the north pole through the centre of the earth towards the south pole, and if you drop a rock into the hole at the north pole, what happens?
Sor Jai: Err…I think due to gravity and because of the molten lava and heat, the rock would be part of the lava, etc. (Some scientific explanation,etc).
danielctw: Haha….nope, it get’s eaten by the rock eating monster
Sor Jai: