Take one table and set it as if you are going to put someone on it and Frogsplash through it. Put another table on top of it (back against table press X + D-pad). Get your finisher and Irish Whip them to the stacked tables. They should look like they are groggy on one table. When the "Finisher" message appears, push it. You will put them through the tables. The same thing can be done with tables on fire, but you must have a hardcore superstar for that, for example Sandman.