Spelling

At 10:30 last night I was almost asleep when Joey suddenly blurted out, "I wonder why 'impunity' is spelled with a g.  It doesn't need a g."

"It's not."  I mumbled.

"It is."  Joey said, firmly.

Now, I hate to prove Joey wrong (sure...) but this time I simply could not resist.  There is absolutely no g in impunity, and there never has been.  Ever.

"Where's the dictionary..." I asked, sleepily.

"On the shelf.  Don't go get it."  I think he was beginning to wonder if there really was a g in impunity, and didn't want me to show him that there wasn't.

"No, no, I will.  I have to show you you're wrong."  So I got out of bed, walked over to the bookshelf, couldn't find the dictionary and so settled for the laptop, which has a dictionary in it.

I brought it back into our room and handed it to Joey who opened it up and furtively typed i-m-p-u-g-n-i-t-y.  To no one's surprise (except maybe Joey's, but Henry and I were not surprised), nothing came up.

"WHAT?"  Joey wailed in a manly sort of way.

"Told you."  I said, smugly.  Henry sniffed my chin in agreement.

Joey typed in i-m-p-u-n-i-t-y and, sure enough, pulled up an entry.   "I know I saw it spelled with a g somewhere..." Joey muttered as he closed the laptop in defeat.

I, however, am not sure where he could have ever seen it spelled that way.  I just searched a dictionary for words spelled similarly to "impugnity" and, can you believe it?, I didn't come up with a thing.

An even more burning question is why on earth Joey was thinking about the word impunity at 10:30 at night.

im·pu·ni·ty   
-noun
1. exemption from punishment.
2. immunity from detrimental effects, as of an action.