| Answer | Crossword Clue |
|---|---|
| HAHA | Reaction to a knee-slapper |
| JOKED | Told a knee-slapper |
| LEAVEINSTITCHES | Depart on a knee-slapper |
| PALM | It's a real knee-slapper |
| RIOT | Knee-slapper |
| HOOT | Knee-slapper |
| HOTONE | Knee-slapper |
| GASSER | Knee-slapper |
| RIOT | Knee slapper |
| SCREAM | Knee-slapper |
| HOWL | Knee-slapper |
| RIOT | Real knee-slapper |
| JOKE | Knee-slapper, e.g. |
