noun. An elected representative of the common buttmunch.
Related terms: congressasshat, congressrodent, congresswad.
Real citation: “few know that most of Murtha’s service time was in the reserves with any deployment deferred because he was a sitting congressbutt.”
(Sept. 7, 2006, Sweetness & Light, http://sweetness-light.com/archive/still-more-on-murthas-msm-ignored-abscam-past)
Made-up citation: “A governorface is more likely to become presidentwad than a congressbutt, according to enrollees in the pre-K political science program.”