Today we will be studying Item number SCP-776: The Youth Cult, Object class: Euclid. SCP-776-A is the adult population of a remote town located in the far northwest corner of Russia. The members of SCP-776-A have discovered a method of reversing biological aging, designated SCP-776-B. The ritual involves the sacrifice of a human being who must be younger than the performer of the ritual, with children being the preferable subjects of sacrifice.
A line after Mr Fantastic talks to Wanda about Black Bolt's powers...she says "What mouth" before fusing Black Bolt's mouth close has become a meme where he says something else and she asks "what..." and altering reality. This he mentions young woman and she says "what young" making them old