Top Definition
The physical act of when your Jack Russell Terrier is running around like a spaz farting and shitting while she's running. This act, while very comical can cause shit to fly every where including but not limited to carpet, doors, ceilings and some household appliances.
I have to get off the phone, Molly just "Jack Sharted" all over the place and I need to contact Molly Maid ASAP!
by Tracyusa August 18, 2010

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