A sex act in which one person is tied to a bed and a sheet with strategically-cut holes placed over them, through which a second person has sex with them.
Sealing the Envelop is to get a female naked and passed out drunk, at which point you masturbate and ejaculate semen down her ass crack using the tip to spread it evenly, then with both hands clamp the cheeks together and wait for it to dry, next day when she wakes up her asscrack will be stuck together.
After getting really wasted woth friends Tony decided to give Ella a helpful sealed envelope
A parking ticket, particularly one in a bright orange envelope, often found under windshield wipers on cars parked at university campuses and busy cities.