Fight ENDLESS monsters! Describe how you defeat the beast!

Example: There is a spider with horse legs.

You only have a toothbrush to use. How do you kill it?

I cast a spell to duplicate the toothbrush until I have 100 of them. Then I sell them to a merchant for 100 gold. Finally, I buy a flamethrower worth 100gp to burn that creepy horse leg spider to dust.

There is a massive dragon with 4 massive butterfly wings and looks eerily similar to a Pokémon called butterfree...

All you have is an empty can of bug spray. How do you kill it?

I return my bug spray to the store and complain about bad customer service until I get a new bug spray can. With this new can I spray it in the eyes of a local town guard and steal his spear. Then I use the spear to knock out and kidnap the dragon's 7-year-old son. Using the child, I work out a deal that if the dragon jumps into a volcano, then his son will live. The son awoke just in time to see his father jump into the lava.

There is a small but VERY annoying Gnome named GLOP who keeps posting on DND forums.

All you have is your laptop, how do you kill it?

I send blackmail until the Gnome begs for MERCY. Then I finish GLOP by sending a picture of himself, but photo shopped to make him look dead. The online role play gets taken too far and he thinks he is dead.

There is an even smaller but less annoying gnome named GLOB.

All you have is guilt for traumatizing his brother GLOP, how do you kill him?

I just say "poof" and both GLOB and GLOP disappear from the material plane of existence.

There are 5 centaurs, you have one sharp stick.

I stab myself in the foot with the stick and scream in pain which summons a magical fairy who is sworn to protect me. I wish for an infinity gauntlet to use and the fairy gives it to me. I use the time stone to reduce the centaurs to children and I raise them as my own family and wait for them to die of old age. (peaceful sigh)

There is a hobbit claiming to be Frobo Gaggins

All you have is the one ring of power.

I put one the ring and whisper an insult right in his ear: "you're a fraud" 

He dies of a heart attack.

There is an army of 100 goblins who are all 100ft tall.

All you have is a rocket launcher, what do you do?

Quote from GL0P >>

There is an army of 100 goblins who are all 100ft tall.

All you have is a rocket launcher, what do you do?

 I keep rocketing the goblins legs & feet toppling them over themselves like dominoes, & to finish them I rock it like rocket & shoot the now unstable floor they're on as the weights collapsing it to break it & send them into a ravine.

There are two identical black cats, is it double bad luck? Probably.

All you have is a fly swatter, what do you do?

Quote from GL0P >>

There are two identical black cats, is it double bad luck? Probably.

All you have is a fly swatter, what do you do?

 I swat my self in the face until the cats leave me alone.

There is a baby T Rex who is hungry. All you have is your pet dog. What do you do?