Jennifer Aniston found kissing younger co-star Will Poulter disturbing

Washington: Jennifer Aniston has revealed that she felt like she was doing something illegal when she was asked to kiss her 20-year-old `We`re the Millers` co-star, Will Poulter, in a scene.

During an interview with talk show host Conan O`Brien, the former `Friends` star said that the kiss was so disturbing because Poulter was so young, Us Magazine reported.

In the particular scene from the movie, which also stars Jason Sudeikis and Emma Roberts, Aniston had to show her on-screen `son` how to kiss.