The only way to use the cheats is to be on "Random Map". Hit enter during game play and type in the following.

display cheat - Displays all cheats available.
rock&roll - 1000 rock
boston food sucks - 1000 food
ahhhcool - lose game
slimfast - no food
girlyman - no iron
mine your own business - no rock
bam - remove fog
columbus - see all fish and animals
i have the power - restore mana to select unit
brainstorm - instant building
coffee train - all structures being built are completed
the quotable patella - Free upgrade to level 10
friendly skies - planes refueled in air