Zac Efron gives Ellen DeGeneres a lap dance, twerks for audience

Zac Efron will appear on The Ellen DeGeneres Show on Wednesday, where he gave the daytime talk show host a lap dance during a game of "Heads Up!"

Staying with the theme of Efron’s new film Bad Grandpa, the topic was “Bad Behaviors.” With that said, Efron had to demonstrate a lap dance, twerking and Tinder.

Efron caused a stir on Instagram this week by posting a caption that some deemed insensitive. In the same sentence, he honored Martin Luther King Jr. and celebrated hitting 10 million followers on Instagram. He then added in a follow-up post, "I have nothing but the greatest admiration and respect for Dr. Martin Luther King Jr. I realize that last night's post was completely insensitive and I apologize to anyone who I have have offended."