Is the sentiment of this text negative?

Input: @user WOW that is some Real hallucinogenic shit U R smokin' der MAN! Careful it may cause U2 kill yourself &amp; not jst fry yur brain
@user WOW that is some Real hallucinogenic shit U R smokin' der MAN! Careful it may cause U2 kill yourself &amp; not jst fry yur brain