When a woman is "sick" and throws herself around the house like a rag doll to show her man how sick she is to escape other life responsibilities, especially chores and cooking.
Guy 1: Man, my girl's been flopping around the house, leaving her crap everywhere and telling me she's so sick that she shouldn't clean, do dishes, or help clean the house.
Guy 2: Sounds like a case of womanigitis to me.