The act of applying sand to one's penis, either through the use of glue or some other adhesive, and penetrating another person sexually, either via anal or vaginal intercourse.
After Susan forgot to pick the clothes from the dry cleaner, Martin gave her a Dirty Seagull.
When after you have finished having sex you shit on your partner from a height and then run down and steal their food straight from their hand. Popular in the Northeast coastal regions of the UK
Our lass was eating some chips after I had gid her one, so climbed up on the wardrobe and gave her the old Dirty Seagull
When your having sex with a girl on the beach, you take your dick out, dip it in the sand, make sure the sand sticks to the vag juice, and continue banging her with your sandy cock
Jill has been complaining of some nasty infection...I wonder if it has anything to do with that dirty seagull I gave her last week