I think it's because usually the punchline is too long
Women: It started after work 2 days ago at 7pm. Men: I think it started in the 90's.
Well, you might think that it'd be Arrrrby's, but they are actually quite fond of Long John Silvers.
A root bear! (I came up with this joke a few minutes ago. I hope it's funny)
Because she'll "Let it go! Let it go!" This joke was made up by my 5 year old nephew.
The punchline
A punchline.
The punchline is too long.