LOL, no, I don’t think we Tebow during Mass. First of all, we kneel on both knees. Secondly, we kneel before the actual body, blood, soul, and divinty of our Lord, Jesus Christ. I think it would be very difficult to make a comparison between the two.
I don’t want to take away from Tebow, because he appears to be a genuine individual with a true love for our Lord, but there is no comparison between what he does and what Catholics do when it comes to kneeling.