"It Is My Birthday"

A young boy and his grandfather go out on the young boy's birthday. Let's call the boy Jim and his grandfather John. Jim:"Can we go to the park?" John:"What's wrong with staying at home?" Jim:"Come on. It is my birthday" John:"Oh. Go on then." They go to the park. Jim:"Can I get an ice cream?" John:"An ice cream? I've already taken you out to the park." Jim:"Come on. It is my birthday" John:"Alright. Seeing as it is your birthday.." He gets the ice cream. Jim:"Can I have a ride on the donkeys?" John:"What? I've already taken you to the park and gotten you an ice cream." Jim:"Come on. It is my birthday" John:"Ok. Let's go on 'em." He rides the donkeys. Jim:"Can we take the donkey home?" John:"Take the donkey home? I've already taken you to the park, gotten you an ice cream and let you ride the donkeys." Jim:"Come on. It is my birthday" John:"Oh for God's sakes; alright!" He takes the donkey and starts walking home. Jim:"Can I name the donkey?" John:"Yeah, if you want." Jim:"I want to call it wanker!" John:"WHAT? Ok, ok. Just don't tell your nan." Jim:"Ok." That night Jim ties the donkey up to the tree. Jim wakes up to a storm raging outside. The donkey is running around like mad and after a huge show breaks free from the rope and starts to run off.

Jim runs as fast as he can into John's room and shouts: "GRANDAD! Wanker's off! Wanker's off!" John:"Now listen here, son-"

Edit 1: Sorry for poor layout. Written on mobile.