Mallo Being A Complete, Thug, Sassy, & Cocky Son Of Mario, Is Something He Is, Or Will Be Known For, Right?
But... When You Encountered And Giving Him A Compliment, He'll Respect It And Thanking You For It.
But When You Give Him A... Sorta A Suggestive Compliment, That's Where He Pulls Out This.

Knowingly, Penelope & Mario Does Not Approve Of Mallo's Sexy/Flirtingly Behavior.
It's Embarrassing To His Father, Mario And His Big Sister, Penelope.

Now If You Do That To Princess Sallie (That Princess Version Of Sallie From The MX's Plaything AU).
She'll EASILY Get Flattered & Blush Hard.
Because Let's Face It.
I Know She Is Known To Be A Submissive Girl Who Wants MX.
But To My Eyes... (And Me In General) I See Her As A Nice, Loving, Motherly Princess, Who Was Summoned By That Bitch, X.
A Princess Who Loves And Cares...
Like Princess Peach.

Because After All Mallo IS The Shawn Michaels Of Universe 7's Mushroom Kingdom.

...
I Think I Made A Whole Dialoage On This Picture.
Did I?

(Bonus: Here's The One With The Transparent Background)

U7 Mario (c) Mariouniverse1

U7 Mallo & U7 Penelope (c) Mariouniverse1