The one friend at a party who, after getting sufficiently drunk, forces others to begin taking shots in an effort to get them near his or her level of drunkenness. This person is easily identifiable since they will usually be holding a bottle of hard alcohol and multiple shot glasses.
I don't want to take any more shots! Stop being such a shotler.
Dude look at Chen. She is such a shotler for making everyone take shots of that smirnoff
Get that handle out of his hand before its too late. He is turning into a shotler.