Wtf is this!?? Appeared all of a sudden

SELECT * FROM gallery2 WHERE topic_id="1382411" UNION SELECT * FROM gallery2 WHERE topic_id="174880" UNION SELECT * FROM gallery2 WHERE topic_id="171350" UNION SELECT * FROM gallery2 WHERE topic_id="1622714" UNION SELECT * FROM gallery2 WHERE topic_id="884278" UNION SELECT * FROM gallery2 WHERE topic_id="1555073" UNION SELECT * FROM gallery2 WHERE topic_id="94695" UNION SELECT * FROM gallery2 WHERE topic_id="698647" UNION SELECT * FROM gallery2 WHERE topic_id="907527" UNION SELECT * FROM gallery2 WHERE topic_id="1047914" UNION SELECT * FROM gallery2 WHERE topic_id="567170" UNION SELECT * FROM gallery2 WHERE topic_id="42532" UNION SELECT * FROM gallery2 WHERE topic_id="1674251" UNION SELECT * FROM gallery2 WHERE topic_id="257688" UNION SELECT * FROM gallery2 WHERE topic_id="1067206" UNION SELECT * FROM gallery2 WHERE topic_id="1261897"