This incredibly foul mouthed band was incredibly funny.
Ciro Santilli was a bit young to understand the songs at the time, but the older boys were singing them, and he sang along. So maybe there is a nostalgia factor in play.
But it can't be just that. They are just too funny and brutal, even when Ciro re-listens to it as of 2020.
Official YouTube channel: https://www.youtube.com/channel/UCPmfP5LNbxYwlN0k6C3F_6w