1. What does it mean?
탕진잼 combines 탕진, spending everything, with 잼, fun. It often describes the pleasure of buying several small treats or hobby items, joking as though the shopping has emptied the budget.
Also written or said as tangjinjaem
2. The nuance
The wording is exaggerated, but repeated small purchases can still add up. It is a description of shopping enjoyment, not a reason to spend beyond one's means.
3. Examples
“문구점에서 스티커를 고르며 탕진잼을 느꼈어.”
Picking stickers at the stationery shop gave me that little-spending-spree thrill.
“탕진잼도 좋지만 정해 둔 간식 예산 안에서 샀어.”
The shopping was fun, but I stayed within my snack budget.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.