A mod that adds to GTA SA (single player only) the ability to put on and take off a mask (bandana), such as in RDR 2. You can put it on or take it off at any time. If you put on a mask and start to knead and kill everyone, then your wanted list will not rise above level 3. If you take it off and continue your debauchery, then the wanted level can reach 6 and the mask will no longer help.
Putting on / taking off the mask is accompanied by animations for each of the actions, including if you sit down. In a sitting position, you need to stop to remove or put on a mask.
More details in the video (although it is more for fun).