It's not just tall it's BIG.
Did you ever get close enough to touch a giraffe's head? They're all BIG.
Some years ago I went through one of those drive-thru Safari parks and at that time the giraffes were loose and would approach people in their vehicles for food. Well one in particular was quite brazen and literally stuck his head inside of the minivan I had at the time...and that huge head took up most of the front seat area.