bier na wijn geeft venijn

Etymology
lit. 'beer after wine yields venom'. Currently the usage is literal, but originally the proverb is said to have been a metaphor for downwards social mobility (beer being associated with lower socioeconomic class, and wine with wealth).

Proverb

 * 1) Drinking beer following the consumption of wine causes greater discomfort (through excessive inebriation and hangovers) than the reverse, namely drinking wine after beer.

Usage notes

 * Often accompanied by and contrasted with.