The breath of someone who has been seagulled, which is having another man rub his cum in your face.
Oh, man, you got seagull breath, it smells like jizz!
A person who has disgusting breath like a seagulls.
Can also be called Seagarl Breath after the famous dickhead actor, who reputedly has toxic breath.
Get your stinkin Seagarl Breath out of my face!