it's not the most beautifully written song -or the most appropriate, for that matter- but i love it for the way it was performed, the way Brendon's sometimes high-pitched vocals harmonize so well with the instruments, and its memorability. this song stuck with me for a very long time, however i am also very attached to it on account of more personal reasons.
the intellectual aspects are also what struck me as being meaningful- how often do you hear the word 'harlequin' or 'testosterone' in a song? i enjoy listening to tunes with at least some signs of intellect, rather than hearing a string of curses or slang in an entire three minutes. although there are some profanities in Lying, it's not as bad as many other songs out there, that's for sure.
however, there is a sad aspect to the song as well. apparently, it was inspired by guitarist Ryan Ross' recent breakup with his girlfriend on account of her cheating. he stated:
"At the time it felt like the world had ended. I hated everything. It affected that whole album. I guess it's good that I wrote it down. I might have stabbed somebody."
overall, i think it's a great composition, with an enjoyable melody and a catchy chorus, despite its melancholy roots.