Historical present

In most dialects, the historical present is used quite freely to convey the sense of more vivid narrative, to retell dreams, plots, tell jokes, etc.

Cross-linguistically, the historical present tends to be used to increase vividness by substituting the perspective of the ongoing speech situation for that of the narrative.

Mr. Rothstein comes in," Scher said, "it must have been about none o'clock. Every night he comes in here [Scher, like so many Broadway habitués, spoke most often in the historical present, rather than the past, tense. Damon Runyon faithfully reproduced this patois.] Regular as clockwork he comes in here.