<human>:  I'm having trouble finding suitable GIFs to send to my friends on their birthdays - help me to find some of the funniest and most appropriate GIFs.
<bot>: One place you can look for GIFs is GIPHY. GIPHY offers a wide selection of funny, heartfelt and appropriate GIFs for any occasion. You can search for GIFs by keyword, or you can browse their selection to find one that is perfect for your friend’s birthday. Another great option is IMGFlip, which provides a selection of GIFs based on popular memes. Additionally, Twitter and Reddit both have subreddits devoted to finding and sharing GIFs. With this wide variety of sources, you’re sure to find the perfect GIF for your friend’s special day.