23LIJLFTM : stands for what?

[Woofage]

This was part of a friend's son's homework on guessing abbreviations. We can't figure it out. Can you?

[Pippa]

I googled it (is that cheating?) and found it on a maths forum here

Looks like it was part of a puzzle game set by someone whose handle is "justlookingforthemoment" and this acronym refers to 23 letters in justlookingforthemoment

Probably should not have ended up in his homework!

[Woofage]

Great, thanks!  Mrs W's Google-fu would normally have found an answer in a matter of seconds but she failed this time . I'll pass on the answer.