Im on the 15th floor
used in the ghetto neighoring areas or (hood) to describe a hard dumbass high when the occupant of the high has taken exactly 15 pills causing them to be angery and easlily agravated towards things that may even be nothing but harmless.
Man in car listening to music see's workers at his local walmart dancing to his music suddenly overcome with anger feels they are making fun of him decides to yell out the window "dont mess with me bitch im on the 15th floor mother fucker!"