Ford frowned and tried (unsuccessfully) to look at his own forehead. This did not feel significant enough to him, even though it had caught him off guard when Cash had done it. Mildly weird behavior probably wouldn't be enough to jog him out of this if they'd been doing it for an hour — and if it was, sprinting at the lake would do more than mussing his hair.
"It'd be better if it was something I could see," he decided. Something visual might make him pause and think long enough to muddle his way through whatever it was that was making him forget, he thought. He glanced down at his hand and flexed it experimentally. Did he know a color changing charm? Or he could ask Cash to cut him — but Cash would refuse, probably, even if he said to make it shallow, and Ford couldn't cast a severing charm on his own wand hand.
"It'd be better if it was something I could see," he decided. Something visual might make him pause and think long enough to muddle his way through whatever it was that was making him forget, he thought. He glanced down at his hand and flexed it experimentally. Did he know a color changing charm? Or he could ask Cash to cut him — but Cash would refuse, probably, even if he said to make it shallow, and Ford couldn't cast a severing charm on his own wand hand.

Set by Lady!