| 2026-04-08 | Knuckled rub to the scalp |
| 2024-05-30 | Playful rub with the knuckles |
| 2024-01-28 | Knuckle-headed act? |
| 2023-08-30 | Knuckle-headed gesture? |
| 2023-07-07 | What might accompany a headlock |
| 2021-01-27 | Knuckleheaded act? |
| 2021-01-08 | A real head-scratcher? |
| 2018-05-29 | Unpleasant accompanier of a headlock |
| 2017-05-27 | Knuckle-headed antic? |
| 2016-03-21 | Knuckle rub |
| 2015-07-29 | Knuckle to the head |
| 2015-04-28 | Painful bit of horseplay |
| 2013-11-02 | Result of knuckling down? |
| 2011-08-28 | Knuckle-headed action? |
| 2011-05-11 | Knuckle-head move? |
| 2008-07-07 | Playful knuckle-rub |