Subverted in Megamind. In a flashback to their childhood, Metro Man uses his heat vision to quickly make some Jiffy Pop. Determined to outdo him, Megamind builds Minion's first set of Powered Armor and equips it with a laser to do the same, only he does it to a bucket of corn on the cob. This only succeeds in creating a small fire.
In The Croods, this happens with giant ears of corn, which shoot off and explode in the sky like fireworks.