It turns out Tetris blocks actually have names and they're incredibly weird - JOE.co.uk
Premium Vector | Set of colorful blocks for tetris game vector illustration
T-Block | Tetris Wiki | Fandom
Taken by the Tetris Blocks: An Erotic Short Story (Digital Desires Book 1) - Kindle edition by Delaney, Leonard. Literature & Fiction Kindle eBooks @ Amazon.com.
What are the different blocks in Tetris called? Is there a specific name for each block? - Quora