黑牛

Etymology
. Compare Brazilian 🇨🇬, regional Latin American 🇨🇬.

Noun

 * 1)  coke float
 * °N, °W

Usage notes

 * 黑牛s are typically made with a scoop of chocolate ice cream on top, as opposed to American-style coke floats which may use any flavour of ice cream (typically vanilla).