gag it
A phrase used when someone is stunned by something, often leaving the person…A phrase used when someone is stunned by something, often leaving the person speechless, impressed, or amazed.
Meaning
1 senses(informal)A phrase used when someone is stunned by something, often leaving the person speechless, impressed, or amazed.
"I just paid my parents’ mortgage off." — "Gag it, Crystal!"