Perhaps this T-shirt is a reference to the song “Rock Me Sexy Jesus” from the movie Hamlet 2?  In the movie, Dana Marschz, a recovering alcoholic and high school drama teacher, writes and stages a sequel to Hamlet in which the prince and Jesus, with the use of a time machine, try to save Gertrude and Ophelia.

Here’s Jesus’ big dance number: 

T-shirt found at zazzle.com.