A Romney family tradition reported by our colleague Philip Rucker on Sunday has inspired a hashtag war between Obama and Romney supporters.

#RomneyOlympics and #ObamaOlympics are both trending on Twitter, mostly due to opponents of each side tweeting snark about the other: Dog-on-the-car jokes are a common theme among #RomneyOlympics tweets and golf jokes are common #ObamaOlympics swipes.

From Rucker’s story:

The Romneys, 30 in all these days, spend their time away from the stresses of everyday life — like, say, wrapping up the Republican nomination for president — by following a highly orchestrated, highly competitive regimen of sports and games known as the “Romney Olympics.”

The Romney Olympics have long included a mini-triathlon of biking, swimming and running that pits Mitt and his five sons and their wives against one another. But after Mitt once nearly finished last, behind a daughter-in-law who had given birth to her second child a couple of months earlier, the ultra-competitive and self-described unathletic patriarch expanded the games to give himself a better shot.

#ObamaOlympics has more traction, according to data from social analytics site Topsy. Here’s a sample of some of the the PG-rated snark being exchanged.