If when talking about wake turbulence your FO mentions catching his own wake on his commercial ride 6 months ago.....You’re probably on an RJ

If your FO shows the FAA his high school diploma while being ramp checked.....you might be flying an RJ

If you have been flying for two years and have more turbine time than prop time....your on an RJ

If your FO after preflight says I always thought the jet would be "Shinier"......you’re on an RJ

If a guy you signed off for his private is a line holder and you are furloughed…..you were on an RJ