别摸头会长不高傻瓜我可以弯腰
[bié mō tóu huì zhăng bù gāo shă guā wŏ kĕ yĭ wān yāo]
This playful username says that if the other doesn't touch the user's head (a superstition), the user won't grow shorter, or jokingly, ‘I can bend down so don’t worry about your height.’ It’s light-hearted and endearing.