even more unmentionable subjects seem like mere splashing around in the muck 
(ROOT (S (NP (ADVP (RB even) (RBR more) (JJ unmentionable)) (NNS subjects)) (VP (VBP seem) (PP (IN like) (NP (JJ mere) (S (VP (VBG splashing) (ADVP (RB around)) (PP (IN in) (NP (DT the) (NN muck))))))))))
(ROOT (S (NP (ADVP (RB ) (RBR ) (JJ )) (NNS )) (VP (VBP ) (PP (IN ) (NP (JJ ) (S (VP (VBG ) (ADVP (RB )) (PP (IN ) (NP (DT ) (NN ))))))))))