Dipper and Sam were at the Mystery Shack, doing guy stuff. After their first 'guys day' they had been having more days like that, just the two of them hanging out. When they did this, they did whatever they wanted, like making fun of boy-bands, throwing potato bombs at Robbie(not as bad as it sounds), go on epic adventures, or be absolute dorks.
"Hand me another card, Sam."
"You got it Dip."
They were making a house out of playing cards, and it was getting rather impressive. Sam opened another deck, they had already gone through two, apparently Dipper was really good at making structures out of cards. He then started to give a card to his best friend, being careful not to breath to hard on their structure.
The Girls
When Mabel had found out her brother and his friend were having their own 'guys day' she, Candy, Grenda, and Trixie started having their own girl days, hoping to get some checks for their side, on the metaphorical scoreboard of boys vs girls.
While the boys had spent their day building stuff out of cards, the girls had primarily just been shopping. They didn't exactly have much money, Mabel worked at the Mystery Shack(Do the words "Child labor" come to mind?), Trixie made some money by putting on magic shows but not much, Candy and Grenda had a small allowance, but that was it. They still managed to have fun, and buy things when they were out though.
They were about to cross the street outside the mall, when Trixie noticed her shoelace was untied.
"One moment girls, I need to tie my shoe."
The other three crossed the street, and waited for Trixie on the other side.
"Hurry up slowpoke!"
She was having more trouble with tying it then she normally did.
"Give me a second, it's being a pain."
"Come on!"
"Alright I'm coming!"
She had finally managed to tie it properly, and started to cross the street to the other girls. However, having been frustrated at her friends telling her to hurry up, she forgot to look before crossing the street, and didn't notice the bus coming.
"TRIXIE LOOK OUT!
The Boys
As Sam was about to hand Dipper another card, he froze, and it slipped from his hand.
"What is it man?"
"My angel sense is tingling."
Sam then disappeared before Dippers eyes.
"What?"
In Town
His wings were out and he beat them furiously. Wind whipped through his hair as he raced with all his strength, time actually warping around him as he went for Trixie.
Trixie filled with sudden shock and terror as she noticed the bus yards from her. The second before she was going to become roadkill, a white blur snatched her up and carried her away at a amazing speed.
The next thing she knew, she was in the air being held, and was slowly coming to the ground, the air filling her saviors large white wings, letting them land softly.
The initial terror she had been filled with a second before was gone, she felt safe now. Sam let her go and held her at arms length. Even though Trixie had been the one who was almost hit by a bus, Sam was the one with tears in his eyes, and he was almost shaking while stood there.
"You stupid girl, look before you cross the street."
He then pulled her into a tight hug.
"I really don't want to lose you."
What had happened began to dawn on her, and she returned his hug.
"Okay Sammy, I will."