:p
Prints the expansion without running it — the box's safety net.
Every designator runs on its own, and that's what makes !text scary. :p disarms it: it prints the expanded line and stops there.
The trick is that the printed line enters history as if it had been typed. Checked it and liked it? !! runs it. Not what you meant? Nothing happened.
$ !ssh:p
ssh estufa@herbario.exemplo.org
$ !!
ssh estufa@herbario.exemplo.org