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An adjective used to express something that is extremely impressive, awesome, breathtaking, magnificent, staggering or wonderful. When something truly exceeds your expectations.

Like the word sick, the phrase Sick in the Dick is used to add that extra bit of emphasis.

Can also be abbreviated to the initialism SITD.
Did you see that GT4 RS drive by? It's Sick in the Dick!
Wow, that new Drake track is so sick, it's SITD!
by Semi-Lucent May 30, 2018
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2
When one has a sexual fetish which they know is wrong or immoral.
Mark: Wait, wait, you jerked off of the cat you nailed with your hummer?
David: Yeah
Mark: Dude, you're sick in the dick.
by SickInTheDick January 10, 2017
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