Are you joking?

A bheil thu a' tarraing asam? 

We're familiar with the simple preposition à (from, out of) already. We saw this in questions like Cò às a tha thu? (Where are you from?) and we saw in Cuspair 3 that we can use this preposition with cinnteach in the idiomatic phrase: tha mi cinnteach às (I am certain of it).  

Like cinnteach às another idiomatic phrase which uses the preposition à is a' tarraing asam , which means 'kidding me on', similar to the English phrase 'pulling my leg'.

Just like other simple prepositions, if we want to use à with the pronouns mi, thu, e, i, sinn, sibh and iad , we need to combine these into prepositional pronouns. 

à + mi asam out of me 
à + thu asad out of you (singular) 
à + e às out of him 
à + i aiste out of her 
à + sinn asainn out of us 
à + sibh asaibh out of you (polite/plural) 
à + iad asta out of them 
A bheil thu a' tarraing asam? 
Are you pulling out of me? 
Chan eil mi a' tarraing asad idir. 
Isn't I pulling out of you at all. 
Thug sin mo lùths asam
That took my strength out of me
Thug mi leum asam thairis air an fheansa
I jumped over the fence
Thug mi grèim às
I took a bite of it
Thug mi an car aiste
I tricked her (I took the twist out of her)
Leig mi sgreuch asam
I let out a scream