Full-Size LEGO Facehugger
There’s plenty of other designs out there but nothing that looks as clean and well put together as this piece.
For those who don’t know, this relates to the antagonist species from the movie franchise Alien. A facehugger is the second stage in a xenomorphs life cycle, their only objective in life is to attach themselves to another species face and force an egg into the stomach. pretty gnarly stuff!