How do i insert a gif into my thread? by TIMOTHEUS-25

How do i insert a gif into my thread?

[raw] LD41LDJam 23. Apr 2018 · 15:27 UTC · 3 days after compo start by TIMOTHEUS-25 · 2

HOW?!?! this markup stuff doesn't seem to be helping, haha. Please can someone help out :3