Not the perkiest but all natural

SELECT * FROM gallery2 WHERE topic_id="955740" UNION SELECT * FROM gallery2 WHERE topic_id="1465631" UNION SELECT * FROM gallery2 WHERE topic_id="1161541" UNION SELECT * FROM gallery2 WHERE topic_id="1213612" UNION SELECT * FROM gallery2 WHERE topic_id="1253765" UNION SELECT * FROM gallery2 WHERE topic_id="18992" UNION SELECT * FROM gallery2 WHERE topic_id="1369266" UNION SELECT * FROM gallery2 WHERE topic_id="657420" UNION SELECT * FROM gallery2 WHERE topic_id="1309213" UNION SELECT * FROM gallery2 WHERE topic_id="1593732" UNION SELECT * FROM gallery2 WHERE topic_id="233314" UNION SELECT * FROM gallery2 WHERE topic_id="835952" UNION SELECT * FROM gallery2 WHERE topic_id="1101265" UNION SELECT * FROM gallery2 WHERE topic_id="150424" UNION SELECT * FROM gallery2 WHERE topic_id="1478907" UNION SELECT * FROM gallery2 WHERE topic_id="714711"