I can also do all 4 letters of the Y M C A song while doing iriminage if uke attacks with their right arm. (If they attack with their left, the C would be backwards).
Suggest you start a poll - how many of us have tried to visualise this immediately. 99% ? and how many will think about it next time they try IN?
If I can't keep a straight face teaching this I'll be blaming you Rob!