Whomps is a word that is used to describe basically anything...its meaning is determined by the person using it. This definition is presented in the Recess episode entitled, "The Story of Whomps". (For you doubters, this must be true because they even brought in a professional slangologist)As a general rule, it is used to describe something or a situation that is undesirable.
what you hear after u inhale dust off spray, a high pitched noise that soudns literaly like "Whomp whomp whomp whmop whomp whomp" at this point ur head feels like its in the clouds from being so lightheaded
"Yo nigga i juzz dusted with those sluts and i bugged out from those whomps in my head,and im mad fuckin lightheaded"