A very versatile term. It originated as a shortening of "womens" which is a nonsense word used as the plural of the already pluralized "women". Wim-Wim is used as an insult or an exclamation.
1. You're a Wim-Wim
2. Aw, Wim-Wims!
3. My Wim-Wim didn't give me any lovin'