When leaving whatever establishment you end up at, and having removed your jacket, pulling the sleeve into a sort of inside out Escher tube, don’t force your arm, and clenched fist through the sleeve in order to free it. Especially if your future wife’s chin is at the end of the arc made by your fist breaking through the knot, rendering her unconscious!
Seriously, don’t do that!
16 years on, she’ll bring it up in front of her three (bigger) brothers and her mum!