Person who always have to make a point in disagrement with whatever you said previously, regardless her/his true opinion about the topic in discussion, making him/her to look like a fool. Always have to present some kind of contrary/ opposite response.
John is such a boboman! Everybody knows that he couldn't care less about the house's color but I soon Jane decided to paint it green he want it to be white.
- We need peace!
- I couln't disagree (agree?) with you more! We need war in order to achive peace!