“What’s the last thing that goes through a fly’s mind when it hits a windshield?” (riddle)

Bugs hit windshields, and there’s a riddle about it:
 
Q: What’s the last thing that goes through a fly’s mind when it hits a windshield?
A: His ass.
 
The joke has been cited in print since at least 1990.
 
 
Google Groups: rec.humor
A bug joke (by request)...
Mark Bishop
2/22/90
What is the last thing to go through a bug’s mind when he hits a windshield?
==> His Butt!!
   
Google Books
Vampire’s Kiss
By William Hill
Kensington Publishing Corporation
1994    
Pg. 211:
Grimm drove through a cloud of bugs. Many splattered all over his windshield, inspiring a joke. “What’s the last thing that goes through a bug’s mind, when it hits a windshield at eighty miles per hour? Its asshole.”
 
Google Groups: rec.autos.driving
Bug splats on windshield ( was Re: “How’s my driving” bumper stickers for teenagers)
Nate B.
10/2/97
(...)
And surely you’ve heard the joke:  What’s the last thing to go through a bug’s mind when he hits a windshield?  Its ass.
 
Google Books
The Sixth Fleet #3: Tomcat
By David E. Meadows
New York, NY: The Berkley Publishing Group
2002
Pg. ?:
What’s the last thing to go through a bug’s mind when it hits a windshield? Its ass.
 
Google Books
A Prairie Home Companion
Pretty Good Joke Book
By Garrison Keillor
Minneapolis, MN: HighBridge Company
2005
Pg. 64:
What is the last thing that goes through a bug’s mind as it hits a windshield?
His butt.
 
Google Books
Promises Betrayed:
Waking Up from the American Dream
By Bob Herbert
New York, NY: Times Books
2005
Pg. 153:
This is an auto racing game — rated appropriate for six-year-olds — that features spectacularly gruesome crashes. An ad showed a man’s head smashing through a windshield. “The last thing to go through your mind,” the ad says, “will be your behind.”
 
Twitter
Joshua Amos
‏@MasterOfDaSkies
Q. What’s the last thing that goes through a fly’s mind when it hits a windshield? A. It’s ass! #joshjokes
1:41 PM - 17 Apr 2009
 
reddit
What is the last thing to go through a fly’s mind when it hits a windshield? (self.cleanjokes)
submitted December 3, 2015 by reverman
Its butt.
 
reddit
What’s the last thing to go through a fly’s mind when it hits a windshield?
submitted July 12, 2016 by JohnRonaldReuelT
It’s rear end!