I was reading this piece of short comic remake titled "How you play it" illustrated by Kawacy and it says
Oda Nobunaga and Okita Souji from Fate/Grand Order
a.k.a the GUDAGUDA ship.
So I search about it, it seems like an event from Fate/Grand Order called GUDAGUDA Honnouji Event. From here, I know gudaguda (ぐだぐだ) mean exhausted; tired. But the event summery says
Something like a "GUDAGUDA Honnouji" suddenly appeared in Chaldea, and Oda Nobunaga is ready for action!
which suggests it's an object rather than a state
So what is GUDAGUDA exactly in relation to Fate/GO? And why did the Oda Nobunaga and Okita Souji pairing get called GUDAGUDA ship? I tried to Google GUDAGUDA ship and I got lot of Oda Nobunaga and Okita Souji pairing so it's not something only from Kawacy above
Note: I have zero knowledge of Japanese language and I never play Fate/GO