Leaks

Look at this ad found in the restroom at the Lenovo Center in Raleigh:

What literary term is being used in this ad to draw attention and help viewers remember it later when they may need these services?

A. situational irony

B. rhetorical device

C. hyperbole

D. pun

Scroll down for the answer.

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Humor is subjective, but also quite effective in helping readers/viewers remember something they saw.  For advertising, remembering the product or service is essential.  This ad is using bathroom humor (in the bathroom, naturally) to stick with the reader.  That most likely narrows it down to a. situational irony or d. pun (though neither of these are required to be humorous).  In this case, the joke is the play on the word "leaks", so d. pun is the correct answer.