When one straight person makes a questionable homosexual comment or gesture to another straight person. Just like in football when a flag is thrown indicating a penalty.
Peter: What was up with Bjorngrabbing your junk earlier tonight?
The rainbowflag is the lgbtq+ flag. This flag is mainly called the 'gay' flag even tho the gay flag is something else. The rainbow flag is so represent all the parts of the lgbtq+ community.
Each color had its own meaning
Red = Life
Orange = Healing
Yellow = Sunlight
Green = Nature
Blue = Harmony
Violet = Spirit
Some person: *points at rainbow flag* "it's the gay flag"