Having sex, doing the nasty nasty, doin 'it' , bangin', juicin, gettin jiggy, boning, smash, oral, or making sweet love IN THE PARK or a very otherwise public area.
A man sliding his erect penis into and out of a woman's vagina while sharing exclamatory dialogue
My friend Joannabananajellyfishjulie and i had a picnic in the park. I brought her a banana and she brought some other food, . . . we both ate out.
(v.) to participate in a picnic as defined above.