| Clue | Source | Date |
|---|---|---|
| Something a bomber delivers? | New York Times | 28 Jan 2017 |
| Something a bomber delivers? | ||
| Prank that tanked | The Washington Post | 07 Nov 2015 |
| Prank that tanked | ||
| It'll make you groan | ||
| It may fall flat | ||
| It's often met with silence | ||
| Cause of some groaning |