"Once the prostitute of your choice is prompted, she climbs into the 
driver’s seat, slides onto your lap, and gyrates against you. You only 
see her neck and chest, so can watch as her clothed virtual breasts 
bounce up and down but everyone remains (mostly) clothed for the 
transaction, which lasts about a minute, and you won’t see any 
genitalia"
from:  The Virtual Sex in Grand Theft Auto V is Terrible
Why LA Mag wasted the time or tried to find any connection to LA (turns out $100 is low for full intercourse from LA prostitutes) are questions only it's editor knows. The article by 
Trevor Philips whose introduced having intercourse with a whore and takes advantage of friend of a friend in Los Santos. She would have had to played the game more than the minute or two it took her to get info on her piece about sex acts.

 
