“It was a stupid joke,” Republican presidential hopeful Rick Santorum says about a wealthy backer’s “aspirins for contraceptives” comment.

Whatever it was, Santorum — a staunch social conservative – said he’s not going to be responsible for what his supporters say.

“I’m not going to play that game,” the former Pennsylvania senator told Fox News host Greta Van Susteren Thursday night when asked about what Foster Friess said earlier in the day.

Friess, the chief donor to the pro-Santorum SuperPAC, was asked whether he had any concerns about the candidate’s views on social issues. Part of his response raised eyebrows.

“Back in my days, they used Bayer aspirin for contraceptives. The gals put it between their knees and it wasn’t that costly,” he told MSNBC’s Andrea Mitchell.