2PM's Nichkhun has tranformed into a swim coach for his wife, f(x)'s Victoria. During the recording of MBC's "We Got Married," Nichkhun fulfilled his wish of wanting to teach Victoria how to swim. Victoria, who was always scared of water, got a hardcore personal swim lesson from Nichkhun in the swimming pool at a Thai Hotel. Nichkhun, who learned intense survival swimming from his parents, showed off his teaching skills as he taught Victoria with an intensive 1-day swimming lesson. However, as Nichkhun was coaching Victoria, a fatal flaw was found in Nichkhun. It has been revealed that this flaw was something that made him lose his honor as a teacher and husband. Unfortunately, we'll have to wait until the show's January 15th  broadcast to find out what it is! Source: Newsen via Nate