That's English from England, as opposed to any other variant spoken around the world.
Firstly, "Quiff".
This is probably an age thing. I'm sure that bit of hair sticking out in front on male teddy boys/rock-and-rollers in the 1950s and early 1960s was well known on both sides of the Atlantic.
Then, "Brass Monkeys".
This is an abbreviation of "cold enough to freeze the balls off a brass monkey", referring to very cold weather.
Finally, "Knackered".
1. Broken, worn out - eg. My car is 10 years old and it's knackered.
2. Exhausted - eg. I've been on my feet all day and I'm knackered.
The "quiff" is on account of Fenwayspal (innocent young thing) asking what a quiff is.
The rest is to describe my day. I went to the Zoo. It was very sunny, but it was brass monkeys, and I had to buy a hat and gloves before I froze. (This is the "me" who wears teeshirts and no coat outdoors almost all the time.) Now I'm absolutely knackered.
Meanwhile, we have reached Albatross.
"I scrabble through the dirt, and Eames just swans off. "
"Er, no I wash not dwinking lass night."
Bobby whistles to cover up the sound of his peeing up a tree.
"No, Eames, your bum doesn't look big in that, honestly (hee,hee,hee)."
Bobby makes eyes at the lady judge in the hope of convicting SWMNBN next time round.
Alex and Bobby watch in disbelief as the Vixens invade the set.
Eames wins the "pull a silly face" contest.
Bobby keeps trying, but just looks kissable.
"Whose idea was the Van Der Graaf generator?
I'll never get my hair to lie flat again."
Bobby treads in something even he finds unpleasant.