"Get a load of" is a popular expression used to draw someone's attention to something interesting or surprising. However, if you are looking for an antonym for this phrase, you could use "pay no attention to" or "ignore." These phrases suggest disinterest or disengagement, rather than the focus and attention that "get a load of" implies. Other antonyms might include "dismiss," "disregard," or "tune out" - all of which connote a lack of interest or engagement, rather than active attention. So if you're looking to suggest someone shouldn't bother paying attention, these are all great options to choose from.