Peter was meeting the royal people of Wakanda. 

Wearing crocs.

He had been wearing them all day, hoping that someone would notice and say the vine, but no such luck. When Mr. Stark said they were meeting the royal family of Wakanda, he had been ecstatic. Until Mr. Stark said they were very formal and 'none of your vines and stuff'. 

Peter, king of spiders, the Wakandans are here. Mr. Stark wants you to come up to the helipad.

"Thanks FRIDAY!" and Peter shuffled up to to the helipad, murmuring vines to himself. When he got up there, he was greeted by a furry, the dude with the metal arm, and a girl wearing an avocado shirt. The was tempted to shout Fre sha voca do but remembered Mr. Starks warning and kept his mouth shut. 

"Hello Mr. Stark," the furry, T'Challa, said." I have brought my sister. She is impressed of your lab since it is the most advanced one outside of Wakanda." Peter whispered to himself

'I like your accent, where are you from?'. The girl seemed to have hear him but not clearly, so she eyed him suspiciously.

"It's a pleasure to meet you, King T'Challa. Is this your sister Shuri?" Mr. Stark gestured at the girl. She opened her mouth but then caught sight of Peter's crocs and that wsa the moment she lost her self control.

"WHAT ARE THOSE!"

He stared in disbelief. She know vines she knows vines repeatedly playing in his head. He had been so shocked, he forgot to respond

"Shuri! I'm sorry she-"

"THESE ARE MY CROCS!" He interrupted the king, which might not have been the best idea. But he didn't care. "I like your accent, where are you from?"

Shuri grinned and replied,"I'm Liberian"

Peter whispered, "Oh I'm sorry, where are you from?" They burst out laughing. T'Challa had a look that said 'there's two of them' and Mr. Stark had a look that said 'I am so done with your shit'. The Bucky came out groggily, kissed T'Challa'a cheek, picked up on the vines and because Shri educated him, joined them. 

"STEVE FUCKING ROGERS YOU DID NOT TELL ME YOU BEST FRIEND KNOWS VINES WHEN I FIND YOU I AM SO GOING TO KILL YOU!"
---------

Steve slept on the couch that day. When Steve reunited with Bucky, T'Challa grinned and said

"Looks like you got your Starbucks after all. :D" Okoye glared and said

"Had it not been for the laws of this land." and that shut him up.

Peter later introduced Shuri to Loki and after the three bonded, no one in the tower was safe anymore. Peter and Shuri started teaching Loki memes and vines and they made a pact that when one person shouted a vine, the other two had to finish it. Shuri knew that Peter was worthy so when he took the hammer from Thor, promising him that it was safe, Shuri shouted

''THIS BITCH EMPTY''

Peter had no other option except throw the hammer out the window and scream

''YEET''

Yeah, now they were grounded but hey, they had fun.