The 27-year-old actor’s jacket was held open by his co-star Dave Franco while picking up the Best On Screen Duo award for their work in Neighbors.
Zac and Dave dressed up in character and grabbed each others crotches in a funny moment.
Zac, who presented earlier in the night alongside Emily Ratajkowski, also won the award for Best Shirtless Performance for the second year in the row.
25+ pictures inside of Zac Efron having fun at the awards show… More Here! »