Jan 5, 2014; Dallas, TX, USA; Dallas Mavericks shooting guard Vince Carter (25) exchanges words with New York Knicks power forward Kenyon Martin (3) and shooting guard J.R. Smith (8) during the first half at the American Airlines Center. Mandatory Credit: Jerome Miron-USA TODAY Sports

VIDEO: J.R. Smith unties Shawn Marion’s shoe during game

That J.R. Smith is one tricky cat.

During the New York Knicks and Dallas Mavericks game, Smith untied Shawn Marion’s shoe when Dirk Nowitzki was taking free throws.

The best part of this whole thing is that Marion doesn’t go down to tie his shoe until after the next defensive series.

You’re a sly one, J.R.

Tags: Dallas Mavericks J.R. Smith NBA New York Knicks