London has to get in shape by taking a fencing class, and wants Maddie to do it too. At first she refuses, but once she sees the good-looking fencing instructor, Diego, she gives in. She and London agree that neither of them should date Diego (or, at least Maddie agrees to it). Of course, they each go on a date with him and find out not long after. And it turns out that Diego has a girlfriend! London and Maddie fight for Diego's heart--by having a fencing match! However, they eventually call a truce and leave Diego. Zack and Cody have a science project on microbes, but this one has a strange twist--Zack is (gasp!) doing all the work, and Cody isn't doing anything! Zack tells Cody about all the germs around your average everyday items, which makes Cody go completely germophobic--he starts wearing a germ-proof suit (which ends up getting accidentally popped during Maddie and London's fencing match). Meanwhile, Zack has found what he thinks is black mold, one of the worst kinds, in the kitchen. Will Cody come out of his germ suit and save the day? See for yourself! This episode is packed with interesting events, including a birthday celebration for a 104-year-old man! Plus, a special guest checks into the Tipton--the great skateboarding prodigy, Mr. Tony Hawk himself!
—Calli