Implicating tribadism_on_penis → pussy
Link to implication

Reason:

required parts

What if the pussy isn't visible? Does it still count as tribbing if the females involved have featureless crotches?

pussy is not necessarily visible in tribadism. this is the same reason why tribadism does not imply to pussy.
post #1255060 post #1225250 post #668096

characters can also be clothed while the pussy tag does not apply. all this applies to tribadism_on_penis too.