to slip into
成功だ 潜り込んだ
I'm in. - I'm in good.
俺なら鼠の巣窟に 潜り込んで
I can burrow into that rat's nest of a head.
「おまえの家族は、南部開発に もぐりこんで、もうけたんだろ」
Last I heard he was married to a 12-year-old boy, living on a beach in Thailand.