They think it is strange that you don't run with them into the same excess of riot, blaspheming:
To the same excess of riot - The word rendered “excess” (ἀνάχυσις anachusis) means, properly, a pouring out, an affusion; and the idea here is, that all the sources and forms of riot and disorder were poured out together. There was no withholding, no restraint. The most unlimited indulgence was given to the passions. This was the case in the disorder referred to among the ancients, as it is the case now in scenes of midnight revelry. On the meaning of the word riot, see the Ephesians 5:18 note; Titus 1:6 note.