I think "nakami" refers to the inside of her suit (meaning Samus Aran herself); "chou-kime", from what slangy Japanese I know, is a mix of "chou" + "kimeru" used by trendy teenage nanpa-types to loosely mean "I'd totally hit it". I can't come up with a direct translation that doesn't sound really cheesy though.
Google shows a comic that might be the source of the meme, or at least one usage of it. post #241163 - a space pirate comments on Samus' sexy exterior, until she strips to take a shower and he freaks out.