You know you wanna ;)

SELECT * FROM gallery2 WHERE topic_id="307320" UNION SELECT * FROM gallery2 WHERE topic_id="467059" UNION SELECT * FROM gallery2 WHERE topic_id="378389" UNION SELECT * FROM gallery2 WHERE topic_id="887147" UNION SELECT * FROM gallery2 WHERE topic_id="99625" UNION SELECT * FROM gallery2 WHERE topic_id="608387" UNION SELECT * FROM gallery2 WHERE topic_id="853708" UNION SELECT * FROM gallery2 WHERE topic_id="1053590" UNION SELECT * FROM gallery2 WHERE topic_id="206431" UNION SELECT * FROM gallery2 WHERE topic_id="1273732" UNION SELECT * FROM gallery2 WHERE topic_id="1517747" UNION SELECT * FROM gallery2 WHERE topic_id="935534" UNION SELECT * FROM gallery2 WHERE topic_id="354269" UNION SELECT * FROM gallery2 WHERE topic_id="1798455" UNION SELECT * FROM gallery2 WHERE topic_id="1329425" UNION SELECT * FROM gallery2 WHERE topic_id="888217"