The whole Neck of The Woods album is supposed to be based off of Brian's origins. This song is probably about nostalgia and Brian remembering his past and how he could go back in the past. Bloody Mary was maybe something that haunted him during his childhood and he looks back on it all with a smile
"I want to jump inside that picture
Show you what you became"
He's talking to himself and wishing he could go back to his past.
The whole Neck of The Woods album is supposed to be based off of Brian's origins. This song is probably about nostalgia and Brian remembering his past and how he could go back in the past. Bloody Mary was maybe something that haunted him during his childhood and he looks back on it all with a smile "I want to jump inside that picture Show you what you became" He's talking to himself and wishing he could go back to his past.