The past-tense of text (text in the sms context)

short for toxic

a man with a powerfull drug addiction

also known as toxing
Simmilarly spelled to Doxxing or Doxing, however you mass-report a person on the internet to make them mad and annoyed, instead of leaking private information

After a hard workout when you feel ridiculously sore and can barely move.

Short for toxic:
Adjective for annoying people online in video games, just boasting about how good they are and how bad you are.