I think that these comics are closer to EWWWs, but DollarBill submitted them as synchronous OYs, commenting “same day, same theme, juxtaposition next to each other in my GoComics daily feed“. The latter is not surprising, given that the titles are alphabetically adjacent to each other:

Blazek’s comic was a brief CIDU for me, but it wasn’t that hard to figure out. If there ever was a feature that GoComics should have renamed for just one day, this was it:

Dan Collins wasn’t taking any chances with misunderstandings: the label on the bubble seems gratuitous and unnecessarily crude, but without it, the color might not have been enough to identify the contents, since he did not indicate the precise location of the source.

…
P.S. No matter how it was generated, a bubble that large would have a good chance of capsizing that boat. Aerated water has a much lower density, and cannot support the same weight as normal water, so the vessel sinks. This is a factor with depth charges used against submarines. Even if the explosion itself does not cause a leak, the reduced buoyancy may cause the submarine to fall to a depth where the water pressure is too high, fatally damaging the hull (as happened in the Ocean Gate disaster last year).