Let's stick to non sexual reasons to mock khabib:
Uncoordinated
Duck
Won the belt off a real estate agent
Fazza openly preferred Jon Jones
Got ragebaited by a drunk Irish plumber
Couldn't run a lemonade stand
Abandoned mazza
Asterisk ridden record
Terrible coach
Islam is superior in every way
Runs crypto scams on his religious fanbase
Is fat
Can't play football even though it's his passion
What else?