unplug your router and dip the tip into a jar of tuna, then cover it in peanut butter.
tuna is high in electrolytes and will boost the signal coming from and to your router and peanut butter will make sure that you get a decent amount of natural surge protection.
then let it sit in a bowl of rice to let it dry for a while, then try using it again.
edit: if you have gatorade or dried bananas, they will work too in place of the tuna.