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. MILC - I was a professional photographer for 6 years
Explanation:
from that time Art is not popular as it was today that's why by that painting it's famous world widw