Again First Timer, Well, whipped cream may be a bit hard to come by in your situation, but you can simulate it nicely. Shaving cream makes a nice substitute and, barring that, mix a little liquid dishwashing liquid and water in a blender or beat with an electric mixer or wire whisk until you obtain stiff peaks of lather. Soap suds are much less messy than whipped cream and they will clean your clothes at the same time. Of course, soap doesn't taste as good, but it's much more slippery.
Hair conditioners can be fun, too, and they smell nice.
Try to use things that won't be conspicuously missed in large quantity, though. A small quantity of liquid detergent whips up into a surprising volume of suds, for instance. Just be sure to rinse well before placing in the laundry, however. Avoid oils of any sort in your situation unless you plan to permanently do away with the soiled item afterward. At your age, that would not be out of the realm of possibility unless you're the sort like me who consciously avoided the liklihood for the longest time.