rivered a boat 3 way

[edge]

Because a flush pays off a raise and 88/JJ pushes over the top. An all-in bluff over top would be very rare because the BB calling means your raise is less likely to be a bluff. It's also possible that SB holds AA/KK/QQ, although that would be a strange way to play it and he may not pay off a raise with an overpair.

That said, Hero has a full house facing a less-than-1/2-pot bet and a call with no reason to fear being behind. Raise it up and see if anyone gets weird. B Buddy's image means that he'll get some very sketchy calls.