Lamar Jackson is revealing why he decided to take "truss" and throw some Z's on it -- claiming someone threatened to SUE him over the Ravens' catchphrase!!
TMZ Sports broke the story ... LJ recently filed an application to trademark the term "Truzz" right around the time he got the word tatted across his chest.
Weird move, considering Lamar's Baltimore Ravens teammate Mark Ingram had been using the phrase "Big Truss" to reference LJ throughout the 2019 NFL season. Woo Woo!
But just as we thought, the switch to "Z's" was all about business -- as Lamar explained Tuesday during a video Q&A with fans.