I don't know if this is supposed to be in the game, but if you get the fire hose, push buddy into the corner with it, then right-click, it sprays him forever. You can do anything else as long as you don't click back into the game screen. It makes it very easy to buy everything. Is this a bug, or just a loophole? It confuses me.
 "Interactive Buddy"){kind=icon}
 "Cloud Wars"){kind=icon}
 "Coil"){kind=icon}