couch rocket
n.— «The Couch Rocket!…My wife thought I was nuts when I bought an ’04 Spirit 1100. Before I knew it, she was hooked as a co-rider. Then we found the Wing. It’s simply an unbelievable machine. It does everything you ask and has plenty left with amazing creature comforts. I took it to a sport rider training class (filled with 20 year olds on crotch rockets) and this old man (52) kept up fine.» —“The Couch Rocket!” by Don Roberts in Naperville, Ill. PowerSports Network Feb. 26, 2005. (source: Double-Tongued Dictionary)