be my guest
Verb
Meaning
be my guest (imperative)
(idiomatic) Do as you wish; go ahead; help yourself; go for it!
If you want to give it a try, be my guest!
Examples
Americans have the right to choose to be unarmed and helpless. Be my guest.
Because they (the Maute group) threatened to go down from the mountains to burn down Marawi? Go ahead, be my guest. We will wait for you there. Walang problema.
You want to do Olympics just like you do a pro football game or a basketball game? Be my guest. Watch it all fade away.