お空ちゃんに侵入するという意味では当たりなのかもしれない

大ちゃんのねこみおそう＞post #1990933

To say I'm going to be "intruding"* upon Okuu-chan may be hitting the nail right on the head.

Attacking Dai-chan in Bed＞post #1990933

Dictionary also lists "to penetrate" as an alternate definition.