Bajatey Raho or Bajaate Raho is kind of a double meaning phrase, though neither of the common usages is sexual.
Bajana as such means to play [an instrument, etc.], and hence, bajaate raho means keep playing, as in, keep playing the music.
However, the word bajaana is also used as a slang these days, which means to beat someone up, mostly figuratively, that is, to make someone reach a really bad state. The slang is basically a shorter form of 'band bajana' which would have the same meaning.
Bajana as such means to play [an instrument, etc.], and hence, bajaate raho means keep playing, as in, keep playing the music.
However, the word bajaana is also used as a slang these days, which means to beat someone up, mostly figuratively, that is, to make someone reach a really bad state. The slang is basically a shorter form of 'band bajana' which would have the same meaning.