"Oh, yeah me, too. Walking ho-" At which point Sarah's foot opted to catch on a slight incline in the pavement, the sort of thing only she was capable of tripping over.
She let out a small 'oof' as she stumbled forward, phone fumbling ungracefully. Toby was sure to have heard Sarah blurt out 'Calvin Coolage!' as she struggled to regain her balance and control of her cell phone.
Somewhat breathlessly, she finally managed to lift the phone back up to her ear. "Sorry. I uh. Dropped the phone for a second there." That sounded better than 'almost fell on my face in the middle of the sidewalk'.
She let out a small, nervous laugh at herself. "SO."