German RäuberleiterHelping another person climb to an elevated position by offering them your hands as an improvised rung.

[One picture]( really does say more than 1000 words in this case. The literal translation is "robber's ladder". Very popular with children and – going by the name – with robbers and burglars. The Wikipedia article on the German [Räuberleiter]( links to the French [courte echelle]( as the only other translation.