Голову даю на отсечение
Голову даю на отсечение
                                 [golovu dayu na otsechenie]
                                                 - to eat one's hat
                           
                  What it means: 
                  honestly, exactly, absolutely so, the very truth. An expression is used in the case when someone fiercely persuades somebody in something.               
                      
          
          
          
          
          
          
         

