One advantage of a slasher killer costume is that they are very easy to roleplay, especially since none of them actually speak, so if you’re planning on going to a costume party, just popping up behind random people, staring at them, womens movie costumes and not muttering a single word is a great way to get into character (or prison). So, as far as cool Halloween costumes for men go, a slasher killer is yet another solid choice that is also easy to achieve using things you may already have at home.