1)"My wife doesn't understand me."
Really means...
"She's heard all my stories before, and is tired of them."

2) "It would take too long to explain."
Really means...
"I have no idea how it works."

3) "That's women's work."
Really means...
"It's difficult, dirty, and thankless."

4) "It's a guy thing."
Really means...
"There is no rational thought pattern connected with it, and you have no chance at all of making it logical."