Gramma Maruzen strikes again.

I don't know what this means, but I think the logo in the bottom panel is referring to this?
ドキッ! 丸ごと水着 女だらけの水泳大会

Which looks like a 90s-era swimsuit competition of some kind. I suppose whatever Maruzenky's saying here is in a reference to that.

Bump for translation since I barely get what Maruzenky is saying.

T34/38 said:

Bump for translation since I barely get what Maruzenky is saying.

I tried. XD
Do correct me if I got anything wrong.