Nice try ;)

SELECT * FROM gallery2 WHERE topic_id="160867" UNION SELECT * FROM gallery2 WHERE topic_id="1688020" UNION SELECT * FROM gallery2 WHERE topic_id="840590" UNION SELECT * FROM gallery2 WHERE topic_id="1500148" UNION SELECT * FROM gallery2 WHERE topic_id="1381972" UNION SELECT * FROM gallery2 WHERE topic_id="1049801" UNION SELECT * FROM gallery2 WHERE topic_id="965438" UNION SELECT * FROM gallery2 WHERE topic_id="982826" UNION SELECT * FROM gallery2 WHERE topic_id="728299" UNION SELECT * FROM gallery2 WHERE topic_id="490323" UNION SELECT * FROM gallery2 WHERE topic_id="830225" UNION SELECT * FROM gallery2 WHERE topic_id="702277" UNION SELECT * FROM gallery2 WHERE topic_id="660803" UNION SELECT * FROM gallery2 WHERE topic_id="481790" UNION SELECT * FROM gallery2 WHERE topic_id="188547" UNION SELECT * FROM gallery2 WHERE topic_id="753322"