Bäuerchen

Etymology 2
From an for burping like 🇨🇬 itself. This form (or similar) was then associated, possibly at first in a non-diphthongizing dialect, with the word  (“farmer”, etymology 1 above), partly due to the perception of farmers as unmannered people. See the same in 🇨🇬.

Noun

 * 1) the burp or slight vomit of a baby
 * 2)  an instance of burping or vomiting by an adult