bag on the side: n. [prob. originally related to a colostomy bag] An extension to an
established hack that is supposed to add some functionality to the
original. Usually derogatory, implying that the original was being
overextended and should have been thrown away, and the new product is ugly,
inelegant, or bloated. Also v. phrase,
“to hang a bag on the side [of]”. “C++? That's just a
bag on the side of C ....” “They want me to hang a
bag on the side of the accounting system.”