Whis X reader x Beerus

I helped little Goten sort out his costume,he is being a little great Saiyaman. You see it is Halloween and I offered to take Goten trick or treating this year as his father Goku is on Beerus planet with Vegeta training. With Chi-Chi having a girls night with Bulma -whatever that means- I also offered to take Trunks,who is going dressed as a king. With the two boys ready,we headed outside to leave when there is the unexpected arrival of Whis,Beerus,Goku and Vegeta back from space.

"Hey guys,I wasn't expecting you back so soon?" I said
"Blame Kakarot for that" Vegeta said "He wanted to come back early"
"Sorry Vegeta but I can't pass up the opportunity of free food" Goku said
"Free food,what free food?" Beerus asked"Why are those little Saiyans dressed strangely?"
"That coming from a cat dressed like an Egyptian god" I said "It's Halloween if you must know"

"Lady Y/n what is this Halloween?" Whis asked
"It's a earth holiday where you dress up in costumes and go trick or treating with friends and family " I explained
"And where does the food come into it?" Whis asked
"You knock on people's doors say 'trick or treat' and they give you sweets " I said
"How wonderful " Whis said "May I join you?"
"I don't see why not" I said.

So far it is me,Goten,Trunks,Goku and Whis
"Anyone else care to join us?" I asked
"What about you my lord?" Whis asked him
"A mere holiday like this does not interest me" Beerus said "However the food does,so yes I will come but only for the food"
"Coming Vegeta?" Goku asked him
"Absolutely not,that's for children " Vegeta said crossing his arms
"You will join us Vegeta or be destroyed "Beerus ordered him.

"What?" Vegeta exclaimed "Fine"myself and Whis laughed silently at how easily Beerus controlled the mighty Saiyan prince
"Think about it this way Vegeta" I said to him" if someone gives us bad sweets you can play a trick on them"
"What kind of trick?" Vegeta asked
"Any kind really,it's Halloween after all" I said shurgging,I know I should have probably put out a limitation but hey it's only for one night,what could possibly go wrong?