Passing of a solid egg through ones anus. Makes a notable "kerrplunk" sound as it penetrates liquid beneath. Will most likely splash undercarriage. Takes place in bathrooms, over tarps, in pants, at Thai ping pong shows and has been seen in isolated farming communities. There have been several reported cases of this occurring spontaneously, most of which have been debunked after initially sparking debate in the science world.
"Gladys egg dumper-ed in front of everybody last night. It was hot."