To enter Burger World type BUTTHEAD in the lock at the employers door.
Enter the following at the password screen at the options menu:
The bomb is not only used to blow up the drink machine at the drive-in theater. If you're low on health and you're desperate to get some without risking your life to kill enemies, use the bomb to blow up toilets. It will leave behind food to get a little healthier. Toilets are found in these stages:
1.) The Drive-in
2.) The Ice Cream Shoppe in the Turbo Mall 2000
3.) The lavatory at Highland High