Amuser

noun

1. One who amuses; one who provides diversion.
2. One who amuses.
3. Someone who amuses.
4. Rogues who carried snuff or dust in their pockets, which they threw into the eyes of any person they intended to rob; and running away, their accomplices (pretending to assist and pity the half-blinded person) took that opportunity of plundering him. (1811 Dictionary of Vulgar Tongue)