Watch the Drum Fills: Introduction online guitar lesson by Ben Lacy from Two-Hand Groove Guitar
In addition to playing bass, snare and hi-hat, a drummer will often do fills. Say at the end of a bar he's groovin' really hard and feelin' good, he might throw in a triplet or quadruplet.
For us it's going to be a combination of the right and left hand to do our fills. I'll show you a whole bunch of them.