1
general::
Phrase(s): You’re dern tootin’!
Rur. You are absolutely right! (Never the full form tooting.) • Tom: Are you really going to take up boxing? Bob: You’re dern tootin’! • Father: Do you really want to buy that droopy-looking puppy? Bill: You’re dern tootin’!
McGrawhill's American Idioms And Phrasal Verbs