What is Play Battleship?
1.
An internationally recognized word for sex.
Barney: You invited me up to your apartment to play Battleship! Isn't that an internationally recognized word for sex?
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2.
To sit at a table with someone while you both have laptops open, opposite one another, as if you were playing battleship.
Dude A: Ugh. I can't believe your didn't pay your internet bill. I really need to check my email.
Dude B: Whatever, let's just take our laptops to Costa Coffee and play battleship.
See
