after tad and charles cut their teeth mastering the [rusty trombone], they joined the big leagues by completing a successful brown elephant exchange
"when two people put their anuses together, one person defecates (preferably a solid log), while the other relaxes to receive the gift into their rectum
"after tad and charles cut their teeth mastering the [rusty trombone], they joined the big leagues by completing a successful brown elephant exchange" What is the definition of "brown elephant exchange"?