Literal Meaning: In a straightforward sense, "Gomu o tsukete to iimashita yo ne" is a polite way of suggesting or reminding someone to use glue for sticking something.
「ゴムをつけてよ」
“ゴムをつけてと言いましたよね。”
“You did say ‘put on a rubber,’ didn’t you?”
"And?" she mimicked, her voice rising an octave. "That's your line? Really?"
The logs don’t lie.