5. You combine leg reaps and sacrifice throws with your Aikido waza in randori and hear your Sensei screaming "No, no Judo, use Aikido" from the corner of the mat.
4. You start doing tantodori with Kali type knifework while your Tori just stands there looking on in shock after being "cut" about a hundred times already.
3. You instinctively find yourself using your free hand to go for your knife to get out of Juji Gatame in Judo newaza.
Just a couople off the top of my head.