To make something seriously awesome, extremely creative, completely epic; brings a uniqueness to it and makes it better...
T-Pain, for example, makes songs like "I'm On a Boat" SO much better and more unique. "T-Caining" comes from T-Pain, but it's better, because it's unique and different, which is what "T-Caining" is. It is the action of making something better, more unique or just making it AWESOME.
Did you bedazzle your shoes?
Ya dude. I just t-cained my shoes.