Acronyms dictionary BYH What does BYH mean? BYH is a texting and chat acronym that means bless your heart, and for some metal fans, it may mean bang your head. Examples of BYH BYH if you think laffy food is better than Nola food. All they have is boudin. @justxree, May, 2018 Metal guy: death spirals will blow you away Metal girl: I wanna see you byh all night Person 1: just borrow our car for the weekend Person 2: BYH! if that's really ok you're a lifesaver! SEE MORE EXAMPLES Just Added comfort character, grandfluencer, frito pie, walking taco, .5 selfie Note This is not meant to be a formal definition of BYH like most terms we define on Dictionary.com, but is rather an informal word summary that hopefully touches upon the key aspects of the meaning and usage of BYH that will help our users expand their word mastery.