An amalgamation of "Numbskull" and "Skullduggery". Can be employed to describe an amusing, risqué, or banter-incucing act, as perpetrated by a numbskull.
Although not in common usage, would work best used by an Englishman, ideally a gentleman from the East End of London.
"Wot on the Sweet Lord's green erf joo fink you woz ap to larst night 'Arry?"
"Wojoomean boss? We wos jus 'avin a larf. Not mar fault the boys in blue turned ap!"
"Well yore faakin' numskullduggery nearly got us locked ap you tit!"
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!