When you are trying to have gentle anal, but your sex partner plows his horse cock up in there, disregarding your desires and your sensitive anus.
Mom: "How was your gay sex with Timothy last night? Was it pleasant?"
Me: "It was quite painful actually. I got analated. Timothy rammed his third leg between my tight ass cheeks when I was hoping for soft sex. He aggressively entered my anal cavity."
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!