F-15:for fun 好玩儿
A:Tom walked away with Mrs. Smith's lipsticks.
A:汤姆顺手牵羊拿走了史密斯太太的口红。
B:I've known that. I asked him the reason, and he said he did this just for fun.
B:我知道了,我问他为什么这么做,他说只是为了好玩儿。
A:That naughty boy.
A:这个淘气鬼。