Final answer:
The Medium 151 Crazy Shake from a specific restaurant chain is made using 3 pumps of flavoring.
Step-by-step explanation:
The Medium 151 Crazy Shake is a menu item from a specific restaurant chain, and the question is asking about the number of pumps used in making this drink. The number of pumps represents the amount of flavoring added to the shake. In this case, the answer is 3 pumps. It is important to note that this answer may vary depending on the specific restaurant and recipe used, as pump amounts can differ.