When I was a young man I was a chippie and worked on sites for several years. I sub-contracted so I was able to move sites if I didn't like a particular job and there were a few.
Male dominated environments are notorious for the cruelty that is passed off as banter and a label or nickname can stick with you for life.
You are in the UK so you are covered by the Equality Act 2010. If you should choose to go down the formal route you can use that to your advantage. Autism is a protected characteristic and the word "retard" is not only inaccurate it would be regarded as hate speech in this context. If your employer fails to address the issues then you could take them to the cleaners with a good lawyer behind you.
Since you want to avoid that route and doubt you would be taken seriously I see 2 options for dealing with it yourself.
1. Bribery as already suggested. In my experience it only ends up with you being taken advantage of but I have heard it to work for others.
2. Fight fire with fire. Become that stand up comedian who destroys hecklers in seconds with a well chosen remark. Be the baddest most sarcastically cruel guy on the site. Don't hold back like most of us do - verbally fight back with insults even more cutting than theirs and become the King of Banter. After a while they may stop challenging you because they end up looking like the losers.
If you were in a different working environment I might suggest trying to reason with them, to educate them as to their folly, but I very much doubt that would work and would likely make things worse.
Male dominated environments are notorious for the cruelty that is passed off as banter and a label or nickname can stick with you for life.
You are in the UK so you are covered by the Equality Act 2010. If you should choose to go down the formal route you can use that to your advantage. Autism is a protected characteristic and the word "retard" is not only inaccurate it would be regarded as hate speech in this context. If your employer fails to address the issues then you could take them to the cleaners with a good lawyer behind you.
Since you want to avoid that route and doubt you would be taken seriously I see 2 options for dealing with it yourself.
1. Bribery as already suggested. In my experience it only ends up with you being taken advantage of but I have heard it to work for others.
2. Fight fire with fire. Become that stand up comedian who destroys hecklers in seconds with a well chosen remark. Be the baddest most sarcastically cruel guy on the site. Don't hold back like most of us do - verbally fight back with insults even more cutting than theirs and become the King of Banter. After a while they may stop challenging you because they end up looking like the losers.
If you were in a different working environment I might suggest trying to reason with them, to educate them as to their folly, but I very much doubt that would work and would likely make things worse.