Stupid Trolls!

 Two trolls are laying a new floor, hammering nails into wooden planks.

One troll keeps looking at nails and throwing them away, muttering "another one, upside down", each time.

The other troll stops what he is doing and asks, "Why are you throwing nails away?"

"There are a lot that are upside down!" His friend declared.

"You daft twit. Don't throw them away. Save them for the ceiling." 

I Am Not Happy

 I found a bottle, rubbed it and out popped a genie. 

"Thank you for freeing me," he said. "I grant you one wish"

"Make me happy", I said.

I now work with six dwarves down a mine! Not exactly what I had in mind.