Alvin and the Chipmunks Go to the Movies: Funny, We Shrunk the Adults is an Alvin and the Chipmunks VHS released on April 14, 1994. 
Imagine shrinking grown-ups down to the size of a bug! That's exactly what happens in Funny, We Shrunk the Adults, starring Alvin and the Chipmunks! Alvin starts an indoor musical skateboarding rally with Simon, Theodore and the neighbor kids! When the skateboarding fun gets out of hand, Simon's experimental shrinking machine accidentally shrinks Dave and Mrs. Miller down to microscopic size! The Chipmunks and their friends do some fast growing up when they realize they have to pull together, find the teeny adults, get them back to normal size, and then ... clean up the GIANT mess they made!
¹ denotes new release to VHS, re-released to DVD
² denotes new release to VHS, not re-released to DVD