Gabe looked at the various things that looked to him like food or sex props that Lyra was intending to use instead in his hair. Muggle remedies? "If this doesn't work I can see what Ophelia has in her potion case." Not that he expected Ophelia spent much time making things unsticky - her potions tended to affect people internally in various ways, so far as he could tell.
"A shower is likely if you're putting any of that stuff in my hair." Gabe agreed. However he didn't seem all that disturbed by the idea. He sat so that she could easily access his hair - both the glue and the remaining feathers.