pig in a python n. especially in demographics, a spike or surge in a statistic measured over time. (source: Double-Tongued Dictionary)
Further reading
If you’re madder than a peach orchard boar you’re angry indeed, or otherwise engaging in wild, unrestrained behavior similar to boars or pigs being let loose to gorge themselves on fallen fruit. Variations include crazier than a peach...
What do you call a segment of an orange? These juicy pieces of fruit go by lots of different names, including section, wedge, and carpel. But they’re also called pegs or even pigs! The stringy parts of a banana also have a surprising name...