The tag alias #71242 young_on_old -> adult_on_young has been approved.
Reason: Former tag is used by a few posts and seems to be redundant.
EDIT: It looks like it was used for a few posts where a younger adult is playing the "active" role on an older adult, but I don't think that's what "on" tags are used for.
EDIT: The tag alias young_on_old -> adult_on_young (forum #408113) has been approved by @slyroon.
Updated by auto moderator