Switching letters is called spoonerism. For example, saying "jag of Flapan", instead of "flag of Japan".
2
The word "impossible" dropped in use by 50% over the course of the 20th century
5
The word 'mortgage' comes from a French law term that means 'death pledge'.
14
The word "listen" contains the same letters as "silent."
135
Stressed is Desserts spelled backwards.
130