How 'bout:
My son just turned 16, and I gave him my old Dodge Viper as a 16th birthday present. I didn't need it anymore since I invented the hover-car. Shssshh no one knows about it yet because it's also invisible, and it travels back in time periodically to set the wrong things right. Anyway, when he first drove the Viper he accidentally crashed it into the Guiness moat surrounding our castle, and discovered a passage to the center of the earth. Of course we had to try it out! I put on my authentic replica Batman suit and he made sure to bring his light-giving necklace that Gandalf gave him (you bet he exists!) just in case the reflected light from Li'l John's bling necklace wasn't enough. Did I mention that when my wife Halle Berry gave birth to Li'l John I named him (ironically) because his baby schlong was bigger than mine? So anyway it was a pretty long trip down through the earth's crust and we were all discussing how cool it was to know the secret of giving any woman endless gushing wet orgasms by farting the right frequency, when out popped the Devil from one of the many oil-gushing stalagmites all around. He offered to trade my sole for a lifetime supply of Magnum warming sensation condoms. I said yes and gave him one of my flip-flops...Tricked him! Eventually the three of us found that the center of the Earth is actually a big rave-party because all of the neglected Ecstasy tablets from the surface get swept down there by accident (always wondered about that). We all proceeded to roll face and fuck until the earth's core started to dim. Just then my future son showed up in his time-travelling viper to carry us back home after giving us all the Hangover Cure which will be invented in 2027.
