Why did the Yeti get kicked out of the coffee shop?

Because it was caught abominably hogging the WiFi

Why did the mummy get grounded after trick-or-treating?

He kept unwrapping all the candy before he got home!

Why did the superhero bring an extra cape trick-or-treating?

In case he needed to super-size his candy bag!

What did the pumpkin say to the pumpkin carver?

You're gourd at that job!