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2.
Any beer low in alcohol content that is also highly quaffable. A style of beer you would want to drink after working hard in the yard on a hot summer day. Usually a crisp pale lager or ale with moderate to high carbonation. Must be well chilled.
Lawn mower beer style examples include American Light Lager, Cream Ale, Blonde Ale, Standard/Ordinary Bitter. Commercial examples include Sam Adams Light, Genesee Cream Ale, Abita Golden, Redhook ESB.
by jaydubwill January 10, 2013
 
1.
Any cheap beer.

Derived because its the kind of beer you drink on hot summer days while you mow your lawn.
Person 1: What kind of beer should we get?
Person 2: Any lawn mower beer is fine. I'm totally broke!
by Allisaur December 09, 2007