What the hell does “one day ifagdptmdgjdp@tmt” mean?

Is it like song lyrics? Like you know how some people confess with the popular song lyrics “iwbylidwbyf” which stands for “i wanna be your lover, i dont wanna be your friend”

So my friend sent me this and when i asked “wth is ifagdptmdgjdp@tmt”
They said “if”