I think what you mean is:
Once, doce, trece, catorze
(eleven, twelve, thirteen, fourteen)
Spanish language doesn’t impress me either.
Personally, I’m not interested in learning to speak Spanish fluently, even because it’s easy for us, Portuguese, to understand this language (despite our Spanish neighbours saying that in they do not understand us). Therefore, I think that Bono does not have to learn to speak Spanish; it is good enough for me that he keeps doing he does better and it would be awesome to have the band back to Portugal again.
I love the song.