Appropriating cultural appropriation appropriation-wise

OK.  So let me see if I've got this straight:  If I choose to wear dreadlocks as this (remarkably pathetic looking) white man at SFSU was accosted for, then I am committing "cultural appropriation" of an 'African' hair style. Yet according to archaeologists, the first dreadlocks were worn by Egyptians.  So all people except those of Egyptian descent who wear the 'locks are in fact cultural appropriating. And while we're at it:  trousers (pants if you're a girl) were invented by horseback riding pastoralists on the edge of China.  So Big Boy pants are Chinese.  So everyone drop 'em right now, you racist, cultural appropriators, you. And of course the concept of cultural appropriation comes from the western European philosophical tradition of existentialism, post modernism and literary deconstruction. So even using the concept much less the term of cultural appropriation is culturally appropriating my culture.  So back off man! You're oppressing me.