a way of saying bullshit to your friend whilst you are baby sitting their sister’s kid. Or if you are twelve and believe it is too savage to ever breathe such monsterous words.
mandy: claire said to everyone that i slept with johnny. but i totally didn’t! ugh, i hate it when she spreads this bull-

nina: mandy the kid!

mandy: this.... bull... shirt! bullshirt. ugh i hate it.
by nonamesarefree October 25, 2018
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You meant to type Bullshit, didn't you. Tut. Tut. Tut. Tut.
Thats a load of Bullshirt man. FUCK
by Sammymmm1 March 7, 2022
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A euphemism for bullshit which was a popular t-shirt slogan during the 1970s.
This is nothing but bullshirt.
by Bill the Cat May 22, 2008
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