talking about rabbits... (although not strictly ATC humour) I like this, allegedly, true story....
A pilot reports after landing that he had had collided with a rabbit at 10,000ft... no one believes it, and although the pilot is adamant that he saw a rabbit flying towards him just before it impacted on the windscreen, the accident is put down to a bird-strike. Then analysis of the remains clearly reveals it was a rabbit.
It is proposed that a large bird of prey was probably carrying said rabbit, got scared and jetisoned his lunch to aid his escape manouevre... plummeting rabbit fell right into the path of the approaching jet.... Goodnight Bunny!