Seeing a grown ass man, not to mention one of Niro's stature, do that faintly reminded him of an unfortunately unpleasant man in lock up that had been selected to play the role of prison wife. A role that was every bit as unpalatable as it sounded.
Luckily the sparkly edge that the adrenaline coursing through his body gave him allowed him to quickly move on from the unwelcome thought and get to the humour of the situation with meant Lot snorted and asked "Don't do that," he chuckled, "It's very disturbing,"