What is the party game where girls put lipstick rings on a guys penis?

The party game you're referring to is commonly known as "Lipstick Ring Toss." In this playful and often risqué game, girls attempt to toss lipstick rings onto a guy's penis, typically in a humorous and lighthearted setting. It's meant for adult parties and can lead to laughter and fun, but should always be approached with consent and respect for everyone's comfort levels.