Brewster ran his finger up Michael's calf before caressing his clunt.

God Tom Youre A Clunt

you are a cheating clunt

Basically if your a posh, snobby person acting like a cunt your therefore a clunt. In reference to what James Blunt himself is

"watch out, you almost stepped in some clunt"
"can i call you back? i have to clunt"
"hey, you got some clunt on your face"

Bob: Jane looks exactly like her mom.

Mordzoa: Yes, that is because Jane is cloned from her mother's DNA.

Bob: Holy shit! Jane is a clunt!

"my knees are felling very clunt"