When you suddenly realize the meaning
of words you've been saying all along without questioning them. Sometimes it can be shocking, sometimes it's just cool.
The only one i can think of now is when i realized that the opposite of inept
(i'd been trying to invent the word ept
and realized i didn't need it).
Oh, wait, here's another: I became briefly enchanted
with the word indeed
when i split it into its component