disappear up your own arse

اصطلاح محاوره ای
نشان دادن این موضوع که فردی آنقدر در افکار یا فعالیت های خود غرق شده که ارتباط خود را با واقعیت از دست داده یا هر چیز دیگری را در اطراف خود نادیده می گیرد.
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مثال؛
"I've been trying to get his attention for 10 minutes, but he's disappeared up his own arse thinking about his new project. " ( This sentence implies that the person is so focused on their own project that they're ignoring everyone else. )
"I love spending time with my friend, but sometimes I think she disappears up her own arse when she's talking about her latest hobby. " ( This sentence suggests that the person's friend gets so caught up in talking about their hobby that they start to neglect others. )