Oscularly

Baby drained the bottle and now was oscularly embracing the mint-stick.

Source: wiktionary

She kisses Aubrey ecstatically, declaring him oscularly unmistakable, to the discomfiture of Louise.

Source: wiktionary

But her gentleman friends have already intimated what sort of drama is coming: the odd old one obscurely, the strange familiar one oscularly. The Wide, Wide World, their foreplay foretells, will revolve around com-muting her incestuous passion; and commuting it will be a matter of soliciting and refusing a daughterly kiss—forever and ever.

Source: wiktionary