Where does coger come from?
Outside of its colloquial use, coger is an everyday verb that means "to grab, take, pick up." It can be used in a variety of contexts, from taking the bus (coger el autobús) to picking an item up from the floor. As a slang word, however, it is the English language equivalent of "to fuck or screw" strictly in sexual contexts. As many Latin American slang words are regional, coger is primarily used in South America, but has seen wider use across Latin America.
A rise in the slang term may be due to reggaeton, a music genre which began in Puerto Rico during the 1990s. Reggaeton fuses influences from hip-hop, rap, and traditional Caribbean music. A very masculine scene, reggaeton features themes that are sexually explicit in nature, using different colloquialisms, including coger, to describe having sex. Some popular reggaeton crossover artists that have notably used coger include Maluma, Bad Bunny, and Daddy Yankee.
Who uses coger?
While coger is fairly well-known as slang for "to fuck" in Latin America, there are many regional variants (e.g., pichar in Colombia or chingar in Mexico). In its slang form, coger is conjugated normally.
Note that coger is not often used to seduce a partner, often seen as too vulgar and offensive. Outside of the likes of reggaeton songs, coger can be heard among friends, for instance, boasting about sexual conquests.
quero coger con the neighborhood de fondo [i want to fuck with the neighborhood playing in the background]
@joshatypical, March, 2018
Te das cuenta que eres adulto, cuándo tenés que planear cuando coger [You realize you're an adult when you need to plan when to fuck]
@Katrina5090, July, 2017
...o que a la hora de coger hay que dejarse llevar y disfrutar en lugar de andarse preocupando por la celulitis y las estrías. [...or when it's time to have sex you have to let yourself go and enjoy instead of worrying about cellulitis and stretch marks.]
Tamara de Anda, El Universal, February, 2016