Watt took Tucker to morning soccer, and left him after with Sam for the day's adventure at Navy Pier. Jake's game was later, after lunch. Still bitter cold. Gus and I laid low and practiced using vocabulary in sentences. Gus moved from surly resistance to a winning wit, weaving all his sentences through the theme of freshly-coined superhero "Pirhana Man" and his only friend "Pariah Guy". Had me rolling on the floor. Tucker didn't get home till after nine, by which time I was a nervous-wreck from expecting him back by dark.