Ruggie never actually calls Leona “boss” during Book 2 (he does during Vargas Camp (as a sports term) and indirectly in Jack’s dorm vignette, but it is rare). More here: Ruggie’s Speech Patterns. (Video here)
Original Ruggie: Yeah, I don’t need a little brother this big and burly.
EN Ruggie: Yeah, but I don’t need some protein-addled muscle freak nippin’ at my heels and beggin’ for advice.
Original Ruggie: Yeah, it’s unusual for stuff to be left out, so I borrowed some. Maybe they’ll be serving them in stir fry or something tomorrow.
EN Ruggie: Good eye! Not every day you see the good stuff, right? Might “borrow” a few more for some stir fry tomorrow, you know?
Twisted Wonderland Reference Note 