GM: it rolls to attack. Oh that's a 2
Player: PFF easy
GM: for a total of 47, dealing 70 damage and you are grabbed.
GM: for its other 5 attacks ...
My favourite is its reflect ability. If the players pull some meta bullshit like dropping tungsten rods from orbit the tarrasque can just play an uno reverso card and nuke the players.
This is Satire. Its not real.