Aut cum scuto aut in scuto
I have seen where some wag wrote the word trump across the back edge of a $20 bill and then pointed arrows at the 20s. Tsk tsk.
For years my nephew & I have stamped bills with a Where's George stamp. We have added that on some of the bills and have not had a single hit on those bills but 25 on bills without it.Hmm.
I use my stamp regularly. https://www.facebook.com/photo.php?fbid=136162340979665&set=pb.100037576986953.-2207520000.1572454779.&type=3&theater
That's pretty funny. You need to get another one that says: "Re-Elect in" to stamp just above the 20 denomination in the corners.