BS Texts are when the person you're texting makes pacifist like responses. BS Texting is usually used when someone feels guilty about something or when they're annoyed by the person texting them
Maddie: Hey what's up?
Maddie: That's cool. Oh I think I saw you at the movie theater yesterday!
Maddie: We need to go on a date soon!
Maddie: What's wrong?
(2 hours later)
Sam: I'm having an affair
Maddie: WHAT??!! I should've known that was why you were Bullshit Texting me!