Credit: Young/Drummond/Splash News Photo: Justin Bieber Grabs Selena Gomez's Butt in Washington D.C. on December 10, 2011

If standing under the mistletoe will get you kissed on Christmas… then exactly where did you make the mistake of standing if someone is squeezing your butt?

We have no idea. But maybe Selena Gomez knows?

The paparazzi spotted Selena and her boyfriend, Justin Bieber, standing outside the National Building Museum in Washington, D.C. over the weekend. The cute couple was in town to rehearse an upcoming Christmas TV special — but we’re more concerned with where his hands are in this photo!

What do you think, Wetpaint Entertainment readers: allowable PDA or totally TMI?