滥
=
氵
+
监
:
Sir Lancelot (l) wants to stock up on water, and he plans to store it in the anthill's bathroom (an4). He keeps on pouring water bottles (氵) in a cage (监), but the cage just overflows (滥). As the water flows out of the cage Lancelot gets even more enraged and pours more and more water.
lit. to play the yu 竽 mouth organ to make up numbers (idiom); fig. to make up the numbers with inferior products / to masquerade as having an ability / token member of a group