This term is derived from a Snickers commercial that originally aired during Superbowl XLIV.
Joe: Sorry, boss. I was in a hurry this morning and I skipped breakfast, so now I'm playing like Betty White.
2- common insult used on people who have not/ do not eat Snickers before important events, such as football or Colombian Tennis.
2- Hey Elizaboria, eat this Snickers, you're playing like Betty White! We need 4 more points or they'll keep the cocaine!