In general, the style of Don Juan is the easy conversational or epistolary style. Byron is talking to his readers and as he talks his subject reminds him of this or that, to which a few lines or stanzas will thereupon be devoted. Don Juan is deliberately discursive and digressive.
Byron does not always use a conversational tone. In the stanzas on the religious feelings which twilight can arouse in him (Canto III, Sts. 102-08) Byron writes in the inflated Romantic manner. When writing about Tom's thwarted attempt to rob Don Juan, he descends to slang (Canto XI, Sts. 10-19).