BELIEVE ME!
 



I'm not pulling your leg!'

SAM: Hello?

TOM: Sam! Help me!

SAM: What's the matter, Tom?

TOM:: I'm hanging from this rock by one hand. I can't hold on much longer. Call the rescue service quickly!

SAM: Very funny, Tom. Why are you always pulling my leg?

TOM:: Sam! I'm not having you on. It's true! Honestly!

SAM: Pull the other one, Tom!
  pull
someone's
leg
teasing me

have
someone
on

say
something untrue (for fun)

pull the other one
I don't believe you