Not for nothing

[Aligram]

Hello, could you please explain the meaning of the phrase "not for nothing," as in "Not for nothing, I keep him from walking my dog"? Thank you.

Also, is it commonly misused (used to mean the opposite of what it really means)?

Thank you.

 

[banderas]

Hello, could you please explain the meaning of the phrase "not for nothing," as in "Not for nothing, I keep him from walking my dog"? Thank you.There is a good reason, I keep him....

Also, is it commonly misused (used to mean the opposite of what it really means)?

Thank you.

;-)