"să fac spume dacă ştiu", ( usually typed as "sa fac spume daca stiu") is a romanian expression (slang) that
people use when they
don't know something. Recently, someone went viral on
tiktok while they were tasting a dessert. When they asked their mom what it was, she responded with "să fac spume dacă ştiu". "să fac spume dacă ştiu" has become the name of the dessert (it's just pudding, if you're wondering) and everyone is crazy about it.