Pronounced as I swim, ihswym is an acronym short for "I have/had sex with your mother"
Used as an insult towards another person.
"Hah, usually when I come over to your place, Ihswym instead of hangin' around you"
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug