The emote "ᕙ(ᗒUᗕ)ᕗ" is typically used to express excitement or victory. It can also be interpreted as a physical gesture of flexing one's biceps, implying strength or power. Another interpretation is that it represents a "hug" or "high five" gesture. The phrase "Nice arms" emote may refer to the same physical gesture of flexing one's biceps or admiration for someone's muscular arms. However, without context, it is unclear whether this phrase is being used sincerely or sarcastically.