If you see some, this is a red flag that the product is fake.
Having a strong compulsion to drink and becoming irritable or downright volatile when drinking alcohol is another red flag.
Collect medals and get your puppy to the red flag in each level.
If the listing doesn't include pictures of the cartridge or uses a stock photo, let this be a red flag.
One red flag is a too-good-too-be-true price.