Shawn oftentimes uses his famed quote "Don't be..." just before trying to convince someone (mostly Gus) of something which usually turns out to be vital to the case they are working on.

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"Gus, don't be the b---- from apartment 23." – Juliet Takes a Luvvah

"Gus, don't be the Tom Selleck to her Paulina Porizkova." – Juliet Takes a Luvvah

"Gus, don't be the remake of 'Yours, Mine and Ours'. While I am at it, don't be the original either." – No Country for Two Old Men

"Gus, don't be the second time ever I saw your face." – 100 Clues

"Gus, don't be Weepy Boy Santos." – Dead Air

"Gus, don't be the kites upon strings." – Psych: The Musical

"Gus, don't be the very model of a modern major general." – Psych: The Musical

"Gus, don't be the comma in 'Earth, Wind & Fire'."

"Gus, don't be the tender sweetness of a seasick crocodile."

"Gus, don't be the C above middle C in 'Those Endearing Young Charms'."