To get started; get going. "Let's get it on," said the bus driver. "It is time to reboard the bus so we can get going."
LESU - LET - Let Me Answer Your Last Question First - Let the Cat Out of the Bag - Let Your Hair Down - Let's Motivate - LETA - LETAS - LETB - LETD
"LET'S GET IN ON." Abbreviations.com. STANDS4 LLC, 2015. Web. 3 Sep. 2015. <http://www.abbreviations.com/LET%27S%20GET%20IN%20ON>.