This gif illustrates being an adult perfectly. Obligatory front page edit: i was going to ask for boobs but i felt that it would ruin the punchline so i did this instead.
阿公你沒事吧！！？？
1.
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這哪招？
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好有喜感……
3.
Send me pics of fruit.
可愛小貓
4.
source: <a class="youtube-link" href="https://www.youtube.com/watch?v=dVFKVCQPIjo">https://www.youtube.com/watch?v=dVFKVCQPIjo</a>
肌肉！！～
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好小的頭……（錯位）
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來追我啊～呵呵～
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狗狗與螳螂
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水中倒立照
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大樓、雲與光
10.
those blue eyes though.
貓貓
11.
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皮卡辛普森……
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美景與美女
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Man made forest - tree farm.www.ClickManic.com
人工造林（超整齊的）
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雲中閃電