The robots continue their mission to discover what it means to laugh by trying impersonating various robots.
So perhaps changing the speed has 
something to do with laughter?
¿Quiere decir que si cambia 
la velocidad, provoca risa?
¿Quieres decir que si cambia 
la velocidad, provoca risa?
Será que a mudança de velocidade
está relacionada com a risada?