The Mighty Nein’s staying at a tavern one night when Fjord sees Caduceus leave the bar with someone. Fjord follows, thinking that his friend is being lured away to be mugged or something along those lines. Instead, he accidentally gets a front row seat to Caduceus being fucked against an alley wall.

Bonus Points:
+it’s clearly not the first time Caduceus has done this
++the other person is mean/rough enough for Fjord to be offended on Caduceus’ behalf, even though Caduceus himself seems to be enjoying it
+++furthermore, Fjord can’t help but think about how much better he could treat Caduceus (or worse, if that’s what Caduceus apparently wants)