A columbian cum rocket is the act of blowing your load on a girls stomach and proceeding to snort it like a line of coke then sniffing it into your mouth to spit it into her mouth in return.
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!