If there isn’t a law or regulation against this there probably will be shortly.
A friend of mine suggested this but I’ll leave his name out of it unless he tells me otherwise.
First you go to your local sex toy store and buy the biggest, most realistic dildo you can find. Before going through security you attach it such that is hangs down your leg in a realistic fashion. You then opt out for backscatter nude pictures. It will pass through the metal detector just fine but if they do a full pat-down they are going to find it.
Now—what are they going to do?
If they let you through because they figure that is just part of your normal “equipment” then you have just demonstrated you can defeat their three ounce rule with your three pounder.
If they insist on a full examination they are going to have to take you all the way down to the bare skin (and silicone rubber). This will take additional time. If large numbers of people do this then it drives the WAY cost up and makes the body scanners almost pointless.
For bonus points (and this was part of my friend’s suggestion) you do this with a bunch of guys going through as a group with tickets to Las Vegas. You volunteer that you are going for a “special ladies event”.
The same sort of approach can be done by the women with fake breasts.
Remember, TSA backwards is A Security Theater.