Okay got it...
Find your boobie avatar here:
https://duckduckgo.com/?q=boob+gifs&t=fpas&iar=images&iax=images&ia=imagesCopy url
Go to your profile (second option towards to of page, under you user name)
* make sure the display has a column on left with 'profile, modify profile, actions' and 'summary' on the right... if its not showing this way, click the arrow buttons on the upper/right of the display
Once the layout shows as indicated above - it will probably be self explanatory... but if not; click 'forum profile' and you'll see an option to 'personalize picture'... choose 'specifiy avatar url' then paste your previously copied boobie gif.
Click the 'change' button on buttom right - and it should save. <<< that part is the only part I can't confirm, because I don't want to lose my awesome avatar (two big azzholes are way better than a couple of boobies)
Hope that helps... or maybe you're more confused than before?