Interesting that Rabbi Rietti should be in a thread on Rabbi Rubinstein:
We had the pleasure of hosting Rabbi Rubinstein for several nights.
He told us that he & Rabbi Rietti were learning in Gateshead at the same time. There was a rumor circulating that Yonasson R. can cry at will. So a bachur approached him & asked if it was so. Immediately the tears started. The inquiring bachur concerned that he hurt Yonasson started apologising. Says Yonasson “I am doing it”