First drink a bear.
Then take your exhaust off your bike.
Drink another beer.
Get a bunch of small rocks or nuts and put them in the exhaust.
Drink another beer.
Add some diesel fuel in with the rocks or nuts.
Drink another beer.
Starting to get a good buzz.
Plug both ends of the exhaust.
Drink another beer.
Strap exhaust to tractor tire with implement of choice attached on back of tractor.
Grab case of beer and drive tractor.