So here's what I think the song means:
"I'll nail my hands up to the wall" = Robbie (singer) feels so little that he will do anything to feel something
"They just said I'm fucked. Just like my mom is fucked, I bet your dad's fucked up" = cheating/ abuse?
"Alcoholics don't get far. Unless they drink and drive" = of course acoholics
"And I hope I crash and die tonight. I hope I crash and die tonight" = being suicidal
"You were just my first" = heartbreak
"I'm cold to the touch" = being dead (cause dead people are cold)
"Leap to my death" = figure of speech of wanting to die
"I'll die for my friends" = willing to do anything for his friends even if it meant death
"With broken wrists" = slit wrists
"I climb from these walls" = emphasizing that he is feeling very frustrated, nervous, or anxious (so says Google)
"My skin crawls" = may be experiencing a tactile hallucination (also from Google)
So here's what I think the song means: "I'll nail my hands up to the wall" = Robbie (singer) feels so little that he will do anything to feel something "They just said I'm fucked. Just like my mom is fucked, I bet your dad's fucked up" = cheating/ abuse? "Alcoholics don't get far. Unless they drink and drive" = of course acoholics "And I hope I crash and die tonight. I hope I crash and die tonight" = being suicidal "You were just my first" = heartbreak "I'm cold to the touch" = being dead (cause dead people are cold) "Leap to my death" = figure of speech of wanting to die "I'll die for my friends" = willing to do anything for his friends even if it meant death "With broken wrists" = slit wrists "I climb from these walls" = emphasizing that he is feeling very frustrated, nervous, or anxious (so says Google) "My skin crawls" = may be experiencing a tactile hallucination (also from Google)