itchy arm

someone has the/an "itchy arm" when they are jonesin' for some heroine injected into the arm.

I had such the itchy arm visiting my sister this weekend..

Itchy Arm Syndrome

when clint bowyer spingate moments like how clint bowyer spotter went like "you got itcehy arm clint???" and then clint said "ye" and then he spun?!!??!!?!!??!?!?

Look! Theres Ricky Stenhouse with Itchy Arm Syndrome!