aw shucks
An expression of bashfulness or modesty, especially in response to a compliment or…An expression of bashfulness or modesty, especially in response to a compliment or when giving thanks.
Meaning
2 senses(US, colloquial)An expression of bashfulness or modesty, especially in response to a compliment or when giving thanks.
Aw shucks, you're going to make me blush.
(US, colloquial)Used to express disappointment, embarrassment or annoyance.
Aw shucks, it looks like we're going to lose the game after all.