New York slang. Abbreviation of "On The Ave/Avenue". New York City has many streets and popular Avenues locals commonly use to quickly reference relative location.
Basically means: "Want another one?"
ProfessionalCounter Strike player LUCAS1 screams "QUE OTA" after delivering one headshot with the Desert Eagle pistol in the game, now it has become common to scream QUE OTA after headshoting someone with a Desert Eagle.