In the late 80's the DOD and USAREUR agreed to the Treasury's request and all the pennies in Europe were shipped backed to the US because of the 'shortage'. In trade we got all the two dollar bills and Carter quarters (Susan B Anthony dollar coins). It became a game of hot potato as to how fast you could get rid of them, once you got them as change. People (Especially the German places off-post that took US currency, which was almost all of them in Baumholder) would just look at you like "Dude, you're really going to do me like that?" when you would hand them a two dollar bill or a couple of SBAD's.
Favorite thing to do was rip and then tape the Two's. Then they would get taken out of circulation. SPAD's just got chunked into the the nearest pop machine on post.