A picture or selfie (more usually) of someone without their shirt, usually sent to a desired mate to attract them.
by TheGramarMan October 1, 2021
Get the Bird-Shirtmug. verb: meaning to wear only a shirt and no pants or underwear, hence just a shirt. The female version of shirt cocking ; when a woman is naked except for a shirt
Don't bother stopping by my place this weekend, my sweetie has me distracted with her shirt flirting.
by TROTSIG September 3, 2015
Get the shirt flirtingmug. A sideways shirt is something you do to go against the norm. It is something that is abnormal but you do it just to say, "Fuck the system".
by jadedkitty July 19, 2016
Get the Sideways Shirtmug. by 00awesome July 19, 2021
Get the un-shirtmug. Furry shirt is when you put a shirt in the wardrobe too quickly after having ironed it, (i.e. still moist) mould might start to develop. Hence the slightly exaggerated, but relevant reference to furry :-)
by Apple5 May 13, 2014
Get the Furry shirtmug. by BiggerPoppa March 10, 2017
Get the Miguel's shirtmug. by Noblewolf797 July 8, 2023
Get the happy shirtmug.