(CNN) – Josh Romney, son of presumptive GOP nominee Mitt Romney, tweeted from the bathroom on Conan O'Brien's set Wednesday. A mock list of rules included the stipulation: "No TP Mitts."
Mitt Romney's five sons are headed to Conan O'Brien's couch Wednesday for their first joint television interview of the 2012 presidential campaign. Conan’s late-night show airs on CNN's sister network TBS at 11 p.m. ET.