signal suppository
n. A driver who accelerates when you signal to change into their lane, even though they have a lot of space to let you in. Very common in Los Angeles driving. Seeing your turn signal, they instinctually step on the gas, and get right up your a**, like a suppository.
I almost had a bad accident because I changed lanes and that signal suppository nearly rammed into me!
It's so hard to change lanes because of these signal suppositories!
It's so hard to change lanes because of these signal suppositories!