The act of doing something incredibly silly that shouldn't be done, for the purpose of giggles.

When you haven't shit all day and you wipe and still come up with stains.

When he goes to bed and gets a hard boner thinking about his hot blonde gal

That one dude who will literally put his dick in anything, whether it being a really unattractive girl or an actual swamp.

someone who smokes a lot of weed (their mind is swamped)

A swampy kooterbear is an extreamly moist odory vagina

A martini used with olive and its bits. Used with spicy/non spicy deli olive juice and olives. Creates a swampy but tasty martini beyond a filthy martini.