SPOONERISMS
MALAPROPISMS
100

a blushing crow

a crushing blow

100

We need to find an anecdote for the poison

antidote

200

mean as custard

keen as mustard

200

The affluent from the factory polluted the river

effluent

300

nicking your pose

picking your nose

300

I have a terrible coleslaw on my lip

cold sore

400

fresh as a mountain breeze

mesh as a fountain freeze

400

Don't make me the escape goat

scapegoat

500

tasted two worms

wasted two terms

500

For all intensive purposes

intents and purposes