1. E-Male and Attachment. The man wears an "E" on his shirt (a sharpie and a white undershirt will do it) and the woman fastens paper clips all over her top.
2. A Freudian Slip. The man dresses as Freud (a suit is all you need, although a cigar and round glasses are even better) and the woman wears a slip.
3. Curiosity Killed the Cat. The man wears a question mark on his shirt and holds a weapon (got a water gun lying around?); the woman dresses as a cat, which can be as easy as painting whiskers on your face with eyeliner.
4. Mummy and Deady. This is the least sexy of the costumes, but it's a fun one. One person dresses as a mummy by wrapping toilet paper around his torso (go with two-ply here) and the other person just has to look dead—you can do old-school ghost and drape a sheet over your head, or just use powder that's a couple shades too light.
5. Peace and Quiet. One person dresses as a hippie, the other is a mime. The hippie can wear flared pants, a tye-dyed shirt and a headband. The mime can wear black pants, a white and black striped shirt and paint her face white.
Got other good couple's costume ideas? Let us know below!
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Written by Sarah Harrison for YourTango.com.