A very short and lame drift in a shitty car. They usually vary from about 5 to 13 inches in length and last a second or two. Very unimpressive and stupid. Also gives the samdrift-er self-granted bragging rights, which are extremely annoying, especially to those who may actually know what the fuck they're doing.
If you comment on how lame it is, there may be a sameo followed by being samstanced.
A good way to learn how to samdrift is to play Initial D.