senin kafana birşey düştü sanırım

yukarda dusecek birsey yok..

 First line:

 you´ ve got something on your mind i think

about this sentence, can someone help me:

yukarda dusecek birsey yok..

there is nothing to think above

my try

 I guess something fell to your head. (to come to one´s senses) (or the opposite)

There is nothing above to fall. (a sarcastic answer)

definitely not

this saying, which literally means "I guess something fell on your head", is used when someone is doing something unexpected from him, but usually nice.

e.g. if a guy never buys flowers to his girlfriend but one day he comes with the flowers, the girl may say "kafana bir şey düştü sanırım "