Answer:
so we can commcommunicate and understand each other back in the day people would scream to other people if they where in danger voices can is useful to wok together
Explanation:
This is probably a joke but I'll answer anyway
By 'cheeks' they mean buttocks so by "making them clap" is referring to them being so big/thick that they clap or make noise when you walk or move around or something.
I probably got played lol but whatever
B, It is representational