U know samurai,aren't u? they have their own way to talk. they didn't use common japan language, but there is a little bit differences. i think u have to know about their 'language'.
おもしろいだから...
です ー> でござる
to talk like a samurai, u can replace “desu” with ‘degozaru’ or ‘degozaimasu’ or ‘da’ for “samurai’ style.^^
e.g. : watashi wa kamufureto degozaimasu.
おはようございます ー> おはようでござる
If u want to greet someone in the morning, u can say ; ‘ohayoudegozaru!’ and if u want to know someone’s mood, u can say; ‘gokigen ikaga degozaruka.’
元気ですかー> ご機嫌いかがでござるか?
We usually ask someone with ‘genki desuka’ but a samurai have their own way. They use ‘tasshya degozaru ka.’ tasshya means “in good health” and degozaruka is the “are you” bit of things.