“Why did the sperm cross the road?”/“Because I put on the wrong socks before I went for a walk.”

“Why did the chicken cross the road?”/“To get to the other side” is a classic riddle from the 19th century. A sex version (NSFW) is:
   
Q: Why did the sperm cross the road?
A: Because I put on the wrong socks before I went for a walk.
     
The joke was posted on Twitter by Bill Mc7 on August 3, 2010, and has been printed on several images.
 
   
Twitter
Bill Mc7‏
@BillMc7
Why did the sperm cross the road? Because I put on the wrong socks before I went for a walk.
5:22 PM - 3 Aug 2010
 
Twitter
sickipediabot‏
@sickipediabot
Why did the sperm cross the road?
Because I put on the wrong socks before I went for a walk.
1:42 PM - 4 Aug 2010
         
Reddit—Funny
Why did the sperm cross the road? (i.imgur.com)
submitted March 2, 2013 by cutthroattrick
 
Reddit—Jokes
Why did the sperm cross the road?
submitted December 11, 2014 by NanamiTogarashi
Because I put on the wrong sock this morning.
   
Me.Me
WHY DID THE SPERM CROSS THE ROAD? BECAUSE PUT ON THE WRONG SOCK THIS MORNING MEME
MEMES CROSS THE ROAD 🤖 SPERM WHY DID ROAD THIS MORNING BECAUSE WRONG THIS MORNING SOCK THE
FOUND @ 34 LIKES ON 2017-07-17 05:32:21 BY ME.ME
SOURCE: FACEBOOK
 
Twitter 
Shit Jokes‏
@ShitJokes
Why did the sperm cross the road?
Because Dave put the wrong sock on this morning!
3:03 PM - 21 Sep 2017
 
Reddit—Jokes
Why did the sperm cross the road ?
submitted October 6, 2017 by lostf
Because I accidentally put the wrong socks on this morning.