There are a few in this series. One I manage to spot was when Roger and Yoyo where walking along a path and 3 wild dogs came out. Roger used a box of fried pork to distract the dogs and he said "as long as you feed them full, their fighting spirit will fade, then how can they be your enemies" (he is talking about Kevin as well as the dogs) Notice his eyes <_<, so -lol
"entendre" is french word for LISTEN/HEAR in english so DOUBLE ENTENDRE = DOUBLE HEARING = DOUBLE MEANING
Yes, Roger is actually showing his true self - "as long as you feed them full, their fighting spirit will fade, then how can they be your enemies". He love no one but himself. He's manipulating everyone to do his bidding. He's mad with grandma as she sees thru his deception.