Because they were written by women.
A man.
Him: " I am dusting off man.."
Because they'll get sand in their Schlitz.
Yargg! Woman! Stop asking me! You're driving me nuts!"
zzzzzzzzz, wait, I fell asleep at the punchline.
Any best joke
Ehh it's easier If I just write it off as tax evasion"
Q*berty. (my kids wrote this!)