The tay-k switcheroo's name comes from Tay-K's song, "Hard" where he says "She thought she touched my cock but my glock very hard"
Therefore, a "Tay-K Switcheroo" is when one tricks a girl into having sexual intercourse with a foreign object that is in fact, not the man's penis.
"I Tay-K Switcheroo'd" that chick because I swear she got Herpes or somethin' and I don't want none of that"