The reptile known as the Five-Lined Skink is silent, but not as covert as you'd think. From the front end it blends, but its bright blue back end catches the eye no matter how slowly it slinks.
Skink Limerick
Reply

There once was a lazy sales clerk who didn’t want clients to think her a jerk. The solution, you see, was the airport duty-free, where there’d be no obligation to work. [And the salary would be a nice perq.]