Like father, like son.

President Donald Trump is well known for a Twitter typo or ten and Donald Trump Jr. followed in his father’s footsteps Thursday with a doozie.

Trump Jr. wrote “radical” as “radicle” while attacking Georgia Democratic Senate candidates Raphael Warnock and Jon Ossoff in this tweet:

It’s not the first time Trump Jr. has spelled the word wrong:

The Merriam-Webster dictionary defines “radicle” as “the lower part of the axis of a plant embryo or seedling” ― presumably not what Trump Jr. meant.

Twitter users predictably went to town on the president’s eldest son with other dictionary definitions and more: