The 47-year-old rocker appeared to take his time as he wrote his name on the women’s breast backstage at one of his gigs.
“Normally I’m really excited to meet some soaking wet chicks, but for tonight, let’s just say it’s all in a day’s work,” he grinned.
Michaels, who rose to fame as the lead singer of Poison, met a handful of adoring fans following a gig in Joliet, Illinois.
While one woman shed tears of excitement at the prospect of meeting Michaels, another warned him to treat girlfriend Kristi Lynn Gibson well.
“One minute I’m signing a bra and the next minute I’m getting love advice from a total stranger. It’s awesome,” the bemused rock star said.
But he made sure he kept his backstage antics tame, as he was joined on tour by his mother Marjorie Sychak.
The hilarious scenes aired on his US reality show, Bret Michaels: Life As I Know It.