My DH once gave me a boost from behind and it made me really mad. He didn't warn me, so it felt like a hostile shove. I'm not sure what his motivations were, but at the time it didn't seem like he was helping me, it seemed like he was criticizing me for being slow up the hill. My impulse was to yell at him--and I love him dearly. I can't imagine what my impulse would be if some strange man did that to me without warning. He might be missing his head...