Lyric discussion by Mr. Blue Sky 

"Well, your railroad gate, you know I just can't jump it Sometimes it gets so hard, you see I'm just sitting here beating on my trumpet"

Sounds like she shuts him out (physically?), so he's forced to take care of his own, uh, "needs".

Beating on my trumpet?

Seems fairly obvoius to me. ;-)

@Mr. Blue Sky That's an interesting observation.

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