Points for those who predicted a vibrating "exercise" belt/weight loss thingy strapped to the stomach. It's like one of those TV home shopping things of dubious effectiveness.
A scam for Honami's weight loss wishes, and a scam for those who expected a different kind of vibrator.
What I didn't expect was for him to try it on, and for it to be even more "effective" on him than it was for her. Honami, take notes. The abdomen is one of Toshi's weaknesses.