When a hairy man covers another person in somethingsticky, typically hot fudge or honey, presses themselves against their body, then pulls back leaving a layer of hair stuck to the other person. Said person now has a 'catholic sweater.'
Me and Anthony were doing food stuff in bed the other night and he accidentally gave me a catholic sweater.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!