Don't worry about these trivial things, they're just two-bob issues.

two-bob 是澳大利亚和新西兰俚语，源自英国旧货币单位"bob"（1先令的俗称）。two-bob字面意思是"两先令"，引申为"价值很低的、微不足道的"。two-bob issues指"不值一提的小事"。