Belgian Kiss 

Like a French Kiss but with more phlegm.

Andy didn't want to shag that bird last night, she gave him a belgian kiss.

Belgian Kiss by Mr Milky February 17, 2009

Belgian Kiss 

When two people rub their bare bellies together while looking up in bliss. This practice dates back to the middle ages when soldiers returning from war would do this to make sure their wife hadn't gotten pregnant while they were on campaign.

Come give me a Belgian Kiss, my belly longs for yours!

Belgian Kiss by JohnPaulRingoGeorge January 25, 2019

Belgian Kiss 

A shit stain left on the bed sheet from a lazy wiper

The maid wasn`t to pleased to find a guest had left her a belgian kiss

She never wiped her arse properly and belgian kissed the egyptian cotton

Belgian Kiss by wool dog February 23, 2011