Jan 25, - Who says that men don't like to party?. See more ideas about party, 40th birthday parties, 50th birthday party pins. Go for an adult theme party that's bold and exciting with fiesta decor, spooky soiree supplies, a sun and sand theme, luau, or western party. Some other party themes for adults to try include rock and roll, casino, movie night, or mustache party. Whether you're having a Mardi Gras party or Chinese new year, our party supplies have you covered.