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Wiktionary
fuzzy navel

n. 1 (context uncountable English) A cocktail (mixed drink), usually made with peach schnapps and orange juice, though sometimes made with lemonade instead. 2 (context countable English) A serving of this cocktail. 3 (context in compounds English) A drink or food (of a specified type) which imitates this cocktail by featuring peach and orange as central flavours (with or without including any alcohol).

Wikipedia
Fuzzy navel

A fuzzy navel is a mixed drink made from peach schnapps and orange juice. Generally an equal amount of each component is used to concoct it, although quantities may vary. It can also be made with lemonade or a splash of vodka depending on the drinker's taste. The addition of another 1 or 1½ oz of vodka to the fuzzy navel creates a "hairy navel", the more "hair" referring to the increased strength of alcohol in the drink. A Fuzzy Navel recipe is as follows: 1 part vodka, 1 part peach schnapps, 4 parts orange juice.