Take off all my clothes immediately!

I'm going to really cut back on hanging out with them.

Ask them if there is something in their eye. Right on the spot. Calling bullshit out keeps you out of trouble and shows you don't have any complicity for things that can be misunderstood.

Flash my tits at him.

I’d start to worry. 😁

Pretend I didn't notice it

Lick their nips.

Presume it was a friendly gesture , just like someone flashing a smile from a distance.
If he gets over familiar id have to put him in his place

I’d remove myself from the two of them. I could not allow a friend to be hurt over me like that.

Slap him for cheating at Mario Kart.

Nothing

Wink back? Who gives a shit? Unless you plan on banging him then you’re a shit friend.

i wouldn't question it, and let it go unless worse things happen

Ignore it

I'd tell him I don't swing that way 🤨

Tell your friend