The following occurred past the revision stage and just prior to the site going live. 

Client: I found a lot of bugs on my site! I created a spreadsheet with the bugs I found so far. 

The client sends over excel sheet. 

Me: Um… these aren’t bugs, these are changes that you want to make to the design. Changes that you didn’t make, mention, or specify during the design and development stage…

Client: I don’t care - these are BUGS! If it’s something that I don’t want it’s a PROBLEM!  And BUGS are just another word for PROBLEMS! FIX IT!