When two sub-editors or designers mark things as a mistakes or bad style on each others' proof pages purely as retaliation for marking something reasonable on theirs earlier. Also known as proof jousting. Partly derived from calendar battleships-- two people exchanging salvos of dates in an attempt to agree a meeting, either business or social. Example: Honestly, I was playing proof battleships with Tom all day yesterday. What a waste of time.
PROOF BATTLESHIPS
Meaning of PROOF BATTLESHIPS in English
Slang English vocab. Английский сленговый словарь. 2012