The first listener contestant had a last name of "Walkup", which lead to Peter and the panelists having fun with it; particularly, with Charlie Pierce responding with "yeah, right!". The same listener seemed to have been trying to search for the answer for the 2nd question online and Peter and Sue called the listener out on it. Peter said, in an exaggerated manner, "there's no Googling on Wait Wait!". The other panelists jumped on to poke fun of the (failed) attempt.
The first panelist round question dealt with a Greenpeace press release statement that had a really bad "Mad Lib" like fail.
While Peter Sagal was describing how someone caught Barry Bond's 715th home run baseball and Peter let out two Freudian slips by calling Barry Bond's home run baseballs as "his (Bond's) balls" being marked with special holographs and DNA, and said "Barry Bond's balls".