Alternatively; RP-stically Challenged.
A very tragic condition which prevents individuals within the RP (roleplay) community, who wishes to RP, from actually RP'ing as much as they want to, or at all. It's very stunting for their characters and their growth. This may cause the arpistically challenged individual a lot of distress, as they can only do their best to keep up with their peers, but will often lag behind.
Chad: hey bro wanna RP?? :o
Jack: man i'd really like to but i'm feeling arpistically challenged this week...
Chad: no pressure! :D feel free to poke me anytime if you have the time/energy to have our characters interact.
Jack: thank you for being so understanding :'D you rock