Background- the new king recently renamed most of the Amman streets. Most streets now have a commonly used name, an old official name, and a new official name.
The main street has traffic circles, in Arabic "doowar". One says a thing is at "the first circle" (doowar al-awal), "the fifth circle", etc.
The target hotels were near the third circle.
The joke is that the third circle will be renamed...
" doowar al-Kaboom ".