There's a study that found that over 1,000 phrases or words can accidentally trigger some of our favorite virtual assistants! So be careful, someone is always listening-LOL!
Researchers set up devices next to TV's, played hundreds of hours of shows and here are the words they found-
ALEXA can be triggered by the words "Unacceptable", "Election", and "a letter"
GOOGLE HOME can be triggered by "Okay, Cool", "Okay, who's Reading"
SIRI can be triggered by "a city", & "Hey Jerry"
Microsoft Cortana can be triggered by the word "Montana"
Source: Ars Technica