[H]e made a visit to a shop [and] asked for rockets.
Another customer overheard his request and leaned towards him. "Don't buy rockets, Mr. Wight," he whispered, "they 'ave a good selection o' Roman candles an' some right good Catherine wheels, at good prices an' all!"
Alf was mystified. "My kids love to see rockets soaring to the sky. Anyway, what's wrong with rockets?
the man eased in closer. "Why, everyone else can see 'em!"