Top definition
a property of matter by which it remains at rest or in uniform motion in the same straight line unless acted upon by some external force but dynamically as in the Shake Weight™ product which ignites the muscles in your arms, shoulders, and chest.
Works out your arms, shoulders and chest in just 6 minutes a day

You will feel it instantly
My wife purchased the Shake Weight™ today. I could have saved the $19.95 and had her practice Dynamic Inertia on my cock.
by Sir Bacon Longshanks October 06, 2009
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug