くだらない (translations)→ awful bad dumb flippin frivolous frothy insignificant pointless racket ridiculous silly slushy trivial vulgar weedy
たわごと (translations)→ b.s. ball bullshit crap flam flimflam junk ludicrous nuttiness twaddle
ばかな (translations)→ asinine dill fucked impossible witless
ばかにする (translations)→ contempt fuck
ばかばかしい (translations)→ damned humbug idiotic nuts rubbish shit stupid