1) British slang for fuck 2) Toy animal 3) Water toy 
A rubber duck is a toy shaped like a stylized duck, generally yellow with a flat base. It may be made of rubber or rubber-like material such as vinyl plastic. The yellow rubber duck has achieved an iconic status in Western pop culture and is often symbolically linked to bathing. Various novelty variations of the toy are produced. ==History== The h...
Rubber duck is British slang for fuck.
slang for a wheeled excavator (as opposed to a tracked excavator)