london chimney

When you're comfy and wrapped up in a blanket in bed but leave just a little opening for airflow and proceed to blast the nastiest most egrigious fart known to man straight through your little exhaust hole and right into your face

Tom: Hey man, I was laying in bed and had the nastiest fart. It came straight through the opening I left in my blanket and suffocated me.

Al: Sounds like you London Chimney'd yourself, mate. Why?