Humorous and fallible attempt to try and milk coolness/points from any form of audience.
Wizard: *shoots lightning bolts out of his ass*
Steve: I can do that but I don't wanna.
Person in commercial: *jumps out of a plane while doing his taxes and fighting off a lion*
Jimbo to Molly: I can do that but I don't wanna.
Lance: Man, I just saw this sick stunt. The guy was handcuffed while riding a motorcycle down a ramp, and then jumped through 5 fiery hoops over a shark-infested pool that also had spikes at the bottom of it.
Bobby: Pfft... I can do that but I don't wanna.