DUTCH TICKLE HEADCANONS GO:
He is literally the most ticklish person on the planet BUT he's also the trope of 'tough gang leader so I must not show it'.
Hosea always has fun with the knowledge of Dutch's "weakness" by poking him in the belly, whenever he can to get a reaction out of him. (The only place he is REALLY ticklish.) <- Headcanon belongs to @a-fluffer-nutter so credit goes to them.
He does like being tickled but only in secret (which is also one of my favourite tropes) and will only let Arthur or Hosea do it...
I think he might be a squirmer, like when you really REALLY get tickling him he will be on the floor wriggling, legs kicking. All that jazz. Arms have to be pinned down, cause otherwise you MIGHT get a black eye or two.
If he is doing the tickling...
Will pin your arms above your head and tickle you until you're tearing up.
He does not tease much but will reply with "Oh does it now" or "Aww does this tickle?" If you end up spilling that it does in fact tickle like crazy.
If he is in the mood "you, me in the tent right now.." haha oh boy you're in for a ride.