"This'll galvanize the nuns for President Obama," the smilling governor said during an impromptu interview in Annapolis.
O'Malley's comments were a reference to some Catholic nuns' opposition to the budget plan authored by Ryan, which includes deep cuts to social programs and an overhaul of Medicare. Both O'Malley and Ryan are Catholics.
"I need some time to work up some good material," O'Malley quipped before launching into a riff on Ryan "pulling the rug out from senior citizens" and "taking food stamps from hungry Americans."
O'Malley, one of Obama's most active surrogates in this year's elections, said he had no plans to go on national TV this weekeend to talk about the Ryan choice. But he indicated he'd be open to a late invitation.
The governor spoke to reporters at the House office building, where he was meeting with legislative leaders about his proposed gambling expansion bill before a subcommittee meeting where members discussed the measure without voting on it.
O'Malley said the meeting was to say "thank you" for coming in on a Saturday.