I'm going to make a list of favoured phrases from myself.

"GOGOGO"
"Perpetually casually."
"In other news..."
"That's awesome in human form, right there."
"Ciao bella"
"And a spiffing day was had by all."
"Good work, soldier."
"What are you doing, squire? Cool your boots!"
"Most excellent, have a bodacious day."
"Dually noted, chappy."
"M'love"
"M'dear"
"The unf of age"
"It gave me tummy unf"
"Shout louder; China didn't hear you."
"Sundie Mondie Tuesdie Wensdie..."
"IKR?"
"IDEFK"
"STFU"
"GTFO "
"Bawww"
"Fwah fwah" - is shamelessly stolen from Nahhan.
"Sneakily slipping in there in a cheeky fashion. A cheeky in and out, thats all they wanted."
"THIS."
"THAT."
"Me + something = something"
"That = happening."
"It's inevitable, Mr. Anderson."
"Ohoho, I see what you did there."
"ALLA TIEM."
"WOT THIS"
"What is this faggotree/witchcraft/black magic?"