找不到中文版, 我也只理解个大概: Some crawl up your butt.
换句话说, 有的朋友会“Piss you off" ( or pain in the axx). Some snap under pressure. 有的朋友有压力的时候冲你喊 Some don't have the strength to hold you up. 有的朋友当你feel down时候却无能为力
Some get a little twisted. 有的朋友有点神经质 Some are your favourite. 这个都明白 Some are holy. Some are cheap. Some are naughty. 这个都明白 And some actually cover your butt when you need them to.
有的朋友会替你“擦屁股”在你需要的时候, 咱们中文也有这个说法。