Infiltration of the Vegan Club

It's a known fact that vegan circles are infiltrated by agents of the dairy and meat industries as well as the FBI and other secret services.
Members of vegan clubs should be cautious and look for the following symptoms when welcoming a newcomer:

• is he asking too many questions including names, discreetly writing them down in a notepad ?
• is he gate crashing the potluck by screaming "FBI ! you're under arr. !  oops ! hey guys what's up ? Mmmh, that looks yummy !" 
• is he wearing FBI style earphones ?
• is he wearing a leather jacket ?
• etc ...

If the answer is yes for all these questions, the newcomer should be excused