The bulk update request #10495 is pending approval.
remove alias kangaroo_penis (0) -> marsupial_penis (752)
Reason: I believe the kangaroo penis is visually distinct enough to have its own tag. And marsupial_penis doesn't seem like a very good tag since its wiki definition is basically just balls_above_penis, and I don't think all marsupials have very similar penises anyway.
I would also suggest a follow-up of:
alias marsupial_penis -> balls_above_penis/animal_penis
As well as:
imply kangaroo_penis -> kangaroo_genitalia
imply kangaroo_penis -> animal_penis