The gag didn't really pay off when they discovered the beads - it paid off when they each left and went tink tink tink down the hall. I think, for one victim, they sort of grew on him. When he got home his kid loved it too. The other one walked the bike halfway down the hall, then decided to carry it! I don't know if he made it to show his wife.
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."