Top definition
1. Ridiculous (whack), yet awesome circumstances
2. Agreement that something is ridiculously awesome
3. Stating something is ridiculously awesome
4. Synonym of Bomb Diggity
T. The maths exam was cancelled
K. Sickety Whack

K. Saw a 67 fastback mustang
T. Sickety Whack

K. Had the most Sickety Whack weekend.
by Scotty2127 June 13, 2007
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Dirty Sanchez Plush

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2
The bomb diggity, the most awesome, Extremely good (Sick) yet different (Whack). Extremely favourable circumstances.
T "I saw a fully pimped ride yesterday"
K "Sickety Whack"

K "The maths exam has been canceled"
T "Sickety Whack!"
by Scotty2127 March 14, 2007
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Golden Shower Plush

He's warmer than you think.

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