After someone has just said something which could be taken the wrong way (an innuendo
)unintentionally, rather than laughing at the dirty meaning of it by yourself, you can say "ambush", so everyone understands and can laugh along.
Very useful for when children are around and you're ambushing a sexual innuendo
, thus can't explain.
If the innuendo
was on purpose, you can claim it was a suicide mission
, excusing you.