泛滥凯子

'Fan Lan Kai Zi' means ‘overflowing Kaisi’. While Kaisi itself doesn't correspond well in English, here this term can possibly mean some widely spread idea or concept among friends. If used in specific scenarios like internet slang referring certain behaviors of being generous to others even if somewhat foolishly, thus the entire phrase would carry overtones of warning or teasing, suggesting caution against excessive generosity or trustfulness without judgment.