he could whip out to the store and back on a sunday afternoon in the time it took her to work her way over to the last aisle , but when it came to getting the twins ready for bed , well ... william was bathed , freshly diapered , zippered into his green sleep-suit , and sitting in the playpen while thad was still laboring over wendy 's diapers ( and he had n't gotten all the soap out of her hair , she saw , but considering the day they 'd put in , she believed she 'd get it herself with a washcloth later on and say nothing ) .