Grow Your Own Boobies. A tongue in cheek gag gift for your favorite rack lover the grow your own boobies are a small pair of toy breasts that slowly grow to 600% of their original size when kept in a container of water over several days. The best part is these pert little boobs can be used over and over. Just take them out of his container and allow to dry. They will return to original size. Color: Flesh. Type: Adult Gag Gift.