Yeah. Like leave up some (clean) furry art on your desktop.... etc.
Would probably work.
I do that stuff with my brother (he likes to draw pokemon) ill ask him if he ever thought about anthros and hell be like "why would i do that?" and ill just say "no reason"
or
ill tell him "i need to stop playing (insert game here) so i can just go chat on the internet" and he'll just reply "ok whatever" and not even try to interrogate me which is odd because normaly he will.