it there a spell that can make my reproductive parts grow?

Pour hot oil on it.. when it reaches your desired length, hit it with ice cold water..

Just be careful it don't drip onto your feet

Yes, actually. You must first grind the dried ashes of a unicorn's right testicle with a perfectly crafted diamond hammer. Then, once this step is complete, mix it with boiling milk and drink it. After that, get naked and run around the sacred burial chamber, located beneath the ruins of an ancient city (or any local police station will do), chanting the words "Please make my peepee grow." Then attempt to stretch it out to the desired length and width. To ensure that this is a permanent spell, please make a double serving of the unicorn testicle milk, still boiling, and pour it all over your reproductive parts. This will work 100% of the time.