yep, definitely think they're on to something:
From
http://mdn.mainichi.co.jp/waiwai/030...turbation.html
"When my husband's not at home during the day, I tried it with an eggplant and a carrot. Cover them with lotion and they pop right in," housewife Kyoko Shimada tells Shukan Jitsuwa. "It gave me an exquisite pleasure I'd never felt before."