My armpit smells like syrup 

This was something that I heard from some 10 year old in the grocery store today.

Kid: My armpit smells like syrup.
Me in my head: wtf man that's a weird thing to say randomly in a store...

My armpit smells like syrup by Retard_Ryan April 17, 2023

Like a Frenchman's Armpit 

Generally used to describe someone that is emitting a strong, foul body odor. However, may apply to describe anything with a putrid, rancid smell.

Roger's refusal to bath on a regular basis had become unbearable. He was finally confronted by his boss who told him there were too many complaints about him smelling Like a Frenchman's Armpit.

Like a Frenchman's Armpit by Eaton Holgoode April 22, 2015

mouth tastes like an abo's armpit 

To have a foul tasting mouth such as the dry foul taste in the mouth the morning after a hard drinking session. Reference is generally to the Australian aboriginal as they have very poor personal hygiene.

My mouth tastes like an abo's armpit

mouth tastes like an abo's armpit by Djep September 26, 2007