This one is more just a crack fic and isn't very relevant to the timeline. Keith doesn't still suck on his thumb at five, I just really wanted to write this. They really do go on trips like this often though, just no thumb sucking.

Enjoy.

Keith jammed his thumb into his mouth and began nibbling on it.

"Keith! Stop doing that. You'll get made fun of." Shiro batted at this arm. Keith just wrinkled his nose at him and continued on. He could still taste the small square of fudge he'd just finished off. He was really hungry right now but he couldn't do anything about it. They were on their way to see a space museum and his otosan had told him that they would go out to eat afterward. That was when Ojisan gave him the fudge to keep him occupied. Keith didn't like it but what could he do?

None of the other children coming were in the same car. Allura's family, alongside Matt's family were also coming. Matt's dad actually worked here as a astro scientist and got them free tickets. Oh and Shiro's grandfather but he was a given. After all, someone had to come with Shiro even if the Kogane's and the Shirogane's were in the same car.

Shiro grabbed his arm right as otosan spotted them in the mirror.

"Keith, we've talked about this. You'll get sick from all the germs. You're old enough to know better."

Keith groaned, exasperated before tugging his thumb out with a pop. "But I'm hungry." He said quietly.

Shiro laughed. "So you eat your thumb? You little cannibal. You're like a wild dog."

Keith peared at him, suspicious.

"What's a can-na-ble?"

"It means you eat people. Matt taught it to me. He heard it in one of those documentaries his dad watches."

"Takashi!" Ojisan scolded laughingly. "Stop indulging him. He doesn't need to know those words yet."

Keith scrunched his face up and reached over Shiro to kick the back of his seat lightly. "I'm not a baby."

"Only baby's suck on their thumbs." His father teased.

Keith huffed in his car seat. Shiro didn't have to sit in one. Otosan says that's because Keith is still small and underweight. Plus Shiro's older.

Shiro smiled calmly. "C'mon don't be mad. We're almost there. Maybe Matt will have some snacks."

He nodded grudgingly and wiped his thumb on a handkerchief ojisan handed back to him.

When they finally got there, Keith's face dropped in agitation. Lance was bouncing around the parking lot excitedly with his five other siblings and Hunk.

"What is he doing here?"

"Keith, be nice." His father warned, leaning back to unbuckle the seatbelt so he could get out on Shiro's side. He knew his son didn't want to be seen in a car seat by his frenemy and he wasn't cruel.

Keith practically crawled over Shiro as he kicked open the door.

"Hey!" Shiro complained.

Ojisan caught him as he started to run and raised him up. "Not so fast; wait for everyone.

"Put me down! What if they see?" Keith hissed.

"What are we not going to do anymore?" He prompted in Japanese.

"I won't cannibalise my thumb anymore now put me down!" He kicked, saying the word in English since he didn't know the Japanese equivalent.

And he meant it. He was just really hungry and wanted something to chew on. He'd just about die if Lance saw him doing that!

He'd never live it down!