I seechu - What you yell when someone does something so stupid or so co

What you yell when someone does something so stupid or so cool that you can't help but say it.

I seechu you ate the whole cake and then tried to run away.

I seechu you texted your crush and then immediately texted your best friend about it.

I seechu you tried to sing and it sounded like a cat was screaming.