My guess is that there will be at least 1 scene (if not a running gag) where Peter goes to talk to his Aunt May, and there is Tony Stark.
Peter sneaks in early morning, changes for school, goes to tell Aunt May he's running late, and who's standing on the other side of the bed getting dressed!? Tony Stark!!
who says. "Hey Peter"
Peter is running late to meet some friends for something, he hears some clanking in the kitchen and smells something delicious cooking. as he's running down stairs he shouts out "Hey, Aunt May, that smells delicious, whatta makin!?".
Just as he get to the bottom of the stairs, he hears Aunt May say "Whats that Peter!?" from the living room on the right, so he then turns his head to the left towards the clanking in the kitchen, and who turns around in the kitchen holding a skillet and wearing an apron.
"Hey Peter"
It's Homecoming Game night, Peter as usual is running late. He just got home, rushed to his room to change real quick, but really needs to go to the bathroom. So he's impatiently waiting by the door for his Aunt May may to get out of the shower so he use the bathroom. Knocks a few times and pleads with her to hurry up, but gets no response.
Just when he hears the water shut off, Peter turns his head towards the downstairs as he hears the back door downstairs shut, and his Aunt May call up to him "Peter is that you!?"
Just as Peter looks back towards the bathroom door, it swings open, and there is Tony wrapped in a towel and drying his hair with another and he brushes past Peter and say "Hey Peter".