Coconut bikini top
From A KoL Wiki

coconut bikini top
This is a bikini top made of two halves of a coconut, or possibly one half apiece from two completely different coconuts. All jokes about coconut milk can be mailed to the Kingdom of Loathing home office in Pueblo, Colorado.
Type: shirt
Power: 20
Selling Price: 25 Meat.
Moxie +3
Drop Location
Notes
- It was believed that these are dropped by Lumberjills, but not very often (could also be supportive bras instead). It is not possible to combine coconut shells with chewing gum on a string (though one would think that'd make perfect sense), cook, smith, or make a cocktail that would lead to a coconut bikini top.