Alternate title:
Reuse the Joint (Issue) and Go To Jail.
On the new Canada self-adhesive joint issue between Canada and Israel shown below here, which is a very nice stamp by the way, on the back of the booklet of 6 stamps' cover there is a warning at the bottom.
This is the first time that I have seen such a warning myself. Perhaps it has been on booklets before and I didn't see the booklet or notice. Has anyone else seen similar warnings?

'It is unlawful to remove and attempt to reuse postage stamps.'
Stamps and Full booklet back:

Stamp zoomed in and darkened to show the die cutting:
Note simulated tab at bottom to match the Israel issue. (I know londonbus1 posted a picture of the Israel stamp but I couldn't find it)
