In damage-survey parlance, a “slider” isn’t a miniature hamburger, but a structure (usually house) that slides off its foundation cleanly, and largely in one piece. Before plowing through Spencer, the infamous 1998 tornado shoved this wood-frame house bodily off its concrete-block foundation, toward the east-southeast, in the southern portion of the damage path. Note a lack of evidence of any attachment of the house to that foundation. Since the house remained essentially intact and moved closer to the well-anchored mobile home to its east (right), it acted as a wind shelter to prevent all but the front of the mobile home from significant damage (as shown in the next photo).
2 ENE Farmer SD (31 May 98) Looking NE
43.7318, -97.637